💻JAMB CBT PRACTICE (PHYSICS)

                                                                                                        
                0 votes, 0 avg            
                                                            
                
                
            
                                                                        Created on February 29, 2024   By Jgalore’s International Company
                                        💻JAMB CBT PRACTICE (PHYSICS)
                    JAMB CBT PRACTICE/MOCK (Physics)
                                                                                                                                                                
                
                                                            1 / 30
                                                                                                    1) 
The terminals of a battery of emf 24.0 V and internal resistance of 1.0 Ω is connected to an external resistor 5.0 Ω. Find the terminal p.d.
                            
                                                                                                                a. 18.0v            
                                                            b. 12.0v            
                                                            c. 16.0v            
                                                            d. 20.0v            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            2 / 30
                                                                                                    2) 
A travelling wave of amplitude 0.80 m has a frequency of 16 Hz and a wave speed of 20 ms−1
Calculate the wave number of the wave.
                            
                                                                                                                a. 3            
                                                            b. 4            
                                                            c. 5            
                                                            d. 2            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            3 / 30
                                                                                                    3) The branch of physics that deals with the motion of objects and the forces acting on them is called:
                            
                                                                                                                a. Electromagnetism            
                                                            b. Thermodynamics            
                                                            c. Mechanics            
                                                            d. Quantum mechanics            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            4 / 30
                                                                                                    4) A 400 N box is being pushed across a level floor at a constant speed by a force P of 100 N at an angle of 30.0° to the horizontal, as shown in the the diagram below. What is the coefficient of kinetic friction between the box and the floor?
                            
                                                                                                                a. 0.19            
                                                            b. 0.24            
                                                            c. 0.40            
                                                            d. 0.67            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            5 / 30
                                                                                                    5) 
Which of the following is NOT a limitation of experimental measurements?
                            
                                                                                                                a. Systematic error            
                                                            b. instrument resolution            
                                                            c. Random error            
                                                            d. human error            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            6 / 30
                                                                                                    6) 
A generator manufacturing company accidentally made an AC generator instead of a DC generator. To fix this error,
                            
                                                                                                                a. The magnetic field need to be more stronger            
                                                            b. The number of turns of the armature coil need to be decreased            
                                                            c. the split rings should be replaced with slip rings            
                                                            d. the slip rings should be replaced with split rings            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            7 / 30
                                                                                                    7) 
A metal sphere is placed on an insulating stand. A negatively charged rod is brought close to it. If the sphere is earthed and the rod is taken away, what will be the charge on the sphere?
                            
                                                                                                                a. The sphere will remain neutral            
                                                            b. The sphere will become polarized            
                                                            c. The sphere will have a net negative charge.            
                                                            d. B The sphere will have a positive  negative charge.            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            8 / 30
                                                                                                    8) A missile is launched with a speed of 75 ms-1 at an angle of 22° above the surface of a warship. Find the horizontal range achieved by the missile. Ignore the effects of air resistance.
[Take g = 10 ms-1]
                            
                                                                                                                a. 195m            
                                                            b. 271m            
                                                            c. 391m            
                                                            d. 136m            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            9 / 30
                                                                                                    9) Which of the following liquids has the highest surface tension?
                            
                                                                                                                a. Soapy            
                                                            b. water            
                                                            c. mercury            
                                                            d. oil            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            10 / 30
                                                                                                    10) A relative density bottle has a mass of 19 g when empty. When it is completely filled with water, its mass is 66 g. What will be its mass if completely filled with alcohol of relative density 0.8?
                            
                                                                                                                a. 47g            
                                                            b. 32.6g            
                                                            c. 56.6g            
                                                            d. 41.6g            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            11 / 30
                                                                                                    11) What is the name of the model of the atom that describes electrons as orbiting the nucleus in specific energy levels?
                            
                                                                                                                a. Bohr model            
                                                            b. Dalton model            
                                                            c. Rutherford model            
                                                            d. Thompson model            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            12 / 30
                                                                                                    12) Which of the following is a derived unit?
                            
                                                                                                                a. Kilogram            
                                                            b. Metre            
                                                            c. Newton            
                                                            d. Second            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            13 / 30
                                                                                                    13) The working of the beam balance is based on the principle of___
                            
                                                                                                                a. Moments            
                                                            b. Conservation of energy            
                                                            c. Equivalence            
                                                            d. Floatation            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            14 / 30
                                                                                                    14) A step-down transformer is used on a 2.2 kV line to deliver 110 V. How many turns are on the primary windings if the secondary has 25 turns?
                            
                                                                                                                a. 20            
                                                            b. 250            
                                                            c. 200            
                                                            d. 500            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            15 / 30
                                                                                                    15) The surface temperature of a swimming pool on a warm day is 25oC and the temperature at the bottom is 15oC. If the swimming pool has a surface area of 620 m2 and a depth of 1.5m. Find the rate at which energy is transferred by conduction from the surface to the bottom of the swimming pool.
[Thermal conductivity of water (k) = 0.6071 Wm-1K-1]
                            
                                                                                                                a. 2.5kw            
                                                            b. 3.0kw            
                                                            c. 250kw            
                                                            d. 300kw            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            16 / 30
                                                                                                    16) When light of a certain frequency is incident on a metal surface, no photoelectrons are emitted. If the frequency of the light is increased, what happens to the stopping potential?
                            
                                                                                                                a. The stopping  potential does not change            
                                                            b. The stopping potential increases            
                                                            c. The stopping potential can either increase or decrease, depending on the intensity of the light.            
                                                            d. The stopping potential decreases            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            17 / 30
                                                                                                    17) A lorry accelerates uniformly in a straight line with acceleration of  4ms−2 and covers a distance of 250 m in a time interval of 10 s. How far will it travel in the next 10 s?
                            
                                                                                                                a. 650            
                                                            b. 900            
                                                            c. 700            
                                                            d. 350            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            18 / 30
                                                                                                    18) 
An object 40 cm high is 30cm from the pinhole camera. If the height of the image formed is 20 cm. What is the distance of the image from the pin height?
                            
                                                                                                                a. 35 cm            
                                                            b. 70 cm            
                                                            c. 45 cm            
                                                            d. 15 cm            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            19 / 30
                                                                                                    19) On a particular hot day, the temperature is 40°C and the partial pressure of water vapor in the air is 38.8 mmHg. What is the relative humidity?
                            
                                                                                                                a. 70            
                                                            b. 62            
                                                            c. 57            
                                                            d. 95            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            20 / 30
                                                                                                    20) Which of the following materials is a good insulator?
 
                            
                                                                                                                a. Silver            
                                                            b. water            
                                                            c. Rubber            
                                                            d. copper            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            21 / 30
                                                                                                    21) 
A piano wire 50 cm long has a total mass of 10 g and its stretched with a tension of 800 N. Find the frequency of the wire when it sounds its third overtone note.
                            
                                                                                                                a. 400 Hz            
                                                            b. 200 Hz            
                                                            c. 600 Hz            
                                                            d. 800 Hz            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            22 / 30
                                                                                                    22) The near point of a patient\'s eye is 50.0 cm. What power (in diopters) must a corrective lens have to enable the eye to see clearly an object 25.0 cm away?
                            
                                                                                                                a. 2 diopters            
                                                            b. 2.5 diopters            
                                                            c. 0.5 diopters            
                                                            d. 3 diopters            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            23 / 30
                                                                                                    23) 
An explosion occurs at an altitude of 312 m above the ground. If the air temperature is -10.00°C, how long does it take the sound to reach the ground?
[velocity of sound at 0oC = 331 ms-1]
                            
                                                                                                                a. 0.96s            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            24 / 30
                                                                                                    24) 
 
An object is placed 35 cm away from a convex mirror with a focal length of magnitude 15 cm. What is the location of the image?
                            
                                                                                                                a. 26.25cm behind the mirror            
                                                            b. 10.5cm behind the mirror            
                                                            c. 10.5cm in front of the mirror            
                                                            d. 26.25cm in front of the mirror            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            25 / 30
                                                                                                    25) How much work is done against the gravitational force on a 3.0 kg object when it is carried from the ground floor to the roof of a building, a vertical climb of 240 m?
                            
                                                                                                                a. 7.2 kj            
                                                            b. 4.6 kj            
                                                            c. 6.8 kj            
                                                            d. 8.4 kj            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            26 / 30
                                                                                                    26) The number of holes in an intrinsic semiconductor
                            
                                                                                                                a. Is not equal to the number of free electron            
                                                            b. is greater than the number of free electrons            
                                                            c. Is equal to the number of free electron            
                                                            d. is less than the number of free electrons            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            27 / 30
                                                                                                    27) Rainbow formation is as a result of the combination of which of the following phenomena?
(i) Reflection
(ii) Dispersion
(iii) Total internal reflection
(iv) Refraction
                            
                                                                                                                a. ii and iv only            
                                                            b. ii,iii and iv only            
                                                            c. i,ii and iv only            
                                                            d. iii and iv only            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            28 / 30
                                                                                                    28) 
Which of the following thermometers measures temperature from the thermal radiation emitted by objects?
                            
                                                                                                                a. Thermocouple thermometer            
                                                            b. Pyrometer thermometer            
                                                            c. Platinum resistance thermometer            
                                                            d. Constant pressure gas thermometer            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            29 / 30
                                                                                                    29) Which of the following is a type of incandescent light source?
                            
                                                                                                                a. Neon lamp            
                                                            b. Led lamp            
                                                            c. Tungsten filament lamp            
                                                            d. Flourscent lamp            
                                                                                                                                                                                                                                                                    
                                                                                                    
                                                                            
                                                                            
                                                                    
                
                                                            30 / 30
                                                                                                    30) 
Which of the following is NOT an example of elementary modern physics?
                            
                                                                                                                a. Quantum mechanics            
                                                            b. Classical mechanics            
                                                            c. Nuclear physics            
                                                            d. Special relativity            
                                                                                                                                                                                                                                        
                                                                                                    
                                                                            
                                                                            
                                                                    
                
            
Your score is
The average score is 16%
                                                                                        LinkedIn                                                                                                            Facebook                                                                                                                                                                                                VKontakte                
                0%
💻JAMB CBT PRACTICE (PHYSICS)

Written By :

Category :

Posted On :

Share This :

SERVICES

Contact Us

About Us

Privacy policy

HOME
