NTPC CBT-2 Physics Quiz

Question 1:

Expansion of material during heating-

occurs only in solids

increases the weight of a material

decreases the density of a material

increases the density of a material

Question 2:

The physical force that keeps things where they are or keeps them moving in the direction they are travelling is known as?

Torque

Capillarity

Inertia

Resistance

Question 3:

The flow of electrons provides an electric current that can be used to do work, which among the following converts chemical energy to electrical energy?

Photo Cell

Battery

Dynamo

Electric motor

Question 4:

Which of the following is the best conductor of heat?

Mercury

Silver

Copper

Iron

Question 5:

According to Charles's law, at_______________ the volume of a given mass of gas is directly proportional to its temperature.

constant volume

constant volume and pressure

constant temperature

constant pressure

Question 6:

What precaution should be taken when using a laboratory thermometer?

Thermometer should be kept upright not tilted.

The bulb should be surrounded from all sides by the substance of which the temperature is to be measured.

The bulb should not touch the surface of the container.

All of the above

Question 7:

The efficiency of oil transportation through pipeline is affected by?

Viscosity

Strain

Surface Tension

Stress

Question 8:

On what principle is the lactometer based?

Archimedes’ principle

Law of thermodynamics

Newton's law of motion

Law of gravitation

Question 9:

The dispersion of light is due to different deviation suffered by different colours of light, which of the following is the proper sequence of colours?

Red, Green, Yellow

Green, Yellow, Orange

Blue, Yellow, Green

Violet, Blue, Red

Question 10:

The Doppler effect is the change in frequency of a wave in relation to an observer who is moving relative to the wave source. Doppler effect is valid for

Sound

Light

Both sound and light

Gas

NTPC CBT-2 Physics Quiz - 69

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NTPC CBT-2 Physics Quiz - 69

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