Jamb Physics Online CBT Quiz (2021 Prep)

Jamb Physics Quiz

Welcome to Flashlearners Physics Quiz... Read Each Question Carefully And Choose The Best Answer From The Options. You May Click Here for Free Video Tutorials To Boost Your Score Or Simply Click Here To Access Thousands of Physics Questions Offline. Next To Begin...

1. The particle nature of light is demonstrated by the

diffraction of light

photoelectric effect

speed of light

colours of light

2. At what height must a similar body be situated to have potential energy equalAn object is moving with a velocity of 5ms-1. At what height must a similar body be situated to have potential energy equal in value with the kinetic energy of the moving body?

[g = 10ms-2]

1.0m

25.0m

20.0m

1.3m

3. In photo-emission, the number of photoelectrons ejected per second depends on the

Intensity of the beam

Frequency of the beam

Work function of the metal

Threshold frequency of the metal

4. Calculate the energy of the third level of an atom if the ground state energy is -24.8eV

-1.75eV

-9.20eV

-8.20eV

-2.75eV

5. To convert a galvanometer to a voltmeter, a

low resistance is connected to it in parallel

high resistance is connected to it in series

high resistance is connected to it in parallel

low resistance is connected to it in series

6. At what depth below the sea-level would one experience a change of pressure equal to one atmosphere?

100.0 m

0.1 m

1.0 m

10.0 m

7. The time required to bring the train to a complete halt isA train with an initial velocity of 20ms-1 is subjected to a uniform deceleration of 2ms-2. The time required to bring the train to a complete halt is

40s

10s

20s

8. Total internal reflection will not occur when light travels from

glass into water

water to air

water into glass

glass to air

9. Calculate the apparent weight loss of a man...Calculate the apparent weight loss of a man weighing 70kg in an elevator moving downwards with an acceleration of 1.5ms-2.

105N

686N

595N

581N

10. Calculate the force acting on an electron of charge 1.5 x 10-19C placed in an electric field of intensity 105 Vm-1

1.5 x 10-14N

1.5 x 10-11N

1.5 x 10-12N

1.5 x 10-13N

11. A transverse wave and a longitudinal wave travelling in the same direction in a medium differ essentially in their

period of vibration of the particles of the medium

frequency

amplitude

direction of vibration of the particles of the medium

12. What effort will a machine of efficiency 90% applyWhat effort will a machine of efficiency 90% apply to lift a load of 180N if its efforts arm is twice as long as its load arm?

80N

90N

100N

120N

13. The coefficient of friction between two perfectly smooth surface is

Zero

Infinity

One

Half

14. If a sonometer has a fundamental frequency of 450Hz, what is the frequency of the fifth overtone?

75Hz

2700Hz

456Hz

444Hz

15. A wave that travels through stretched strings is known as

seismic wave

electromagnetic wave

micro wave

mechanical wave

16. Which of the following obeys ohms law?

Glass

Electrolytes

Metals

Diode

17. When a charge moves through an electronic circuit in the direction of an electric force, it

loses both potential and kinetic energy

gains both potential and kinetic energy

gains potential energy and loses kinetic energy

loses potential energy and gains kinetic energy

18. A gas at a pressure of 105Nm-2 expands from 0.6m3 to 1.2m3 at constant temperature, the work done is

6.0 x 104 J

7.0 x 107 J

6.0 x 106 J

6.0 x 105 J

19. The rise or fall of a liquid in a narrow tube is because of the

osmotic pressure of the liquid

viscosity of the liquid

surface tension of the liquid

friction between the walls of the tube and the liquid

20. Calculate the power of the pumping Machine...If a pump is capable of lifting 5000 kg of water through a vertical height of 60 m in 15 min, the power of the pump is

3.3 x 102 Js-1

2.5 x 105 Js-1

2.5 x 104 Js-1

3.3 x 103 Js-1

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Comments

Jamb Physics Online CBT Quiz (2021 Prep) — 99 Comments

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