PG TRB Physics Previous Year Questions with Answer Key - 3

Question: 11

The unit of viscosity is

(A) Jean poiseuille

(B) Pascal

(C) Poise

(D) none of these

Ans: A

Jean poiseuille

Question: 12

Richter scale is used for measuring

(A) Velocity of sound

(B) Intensity of light

(C) Intensity of sound

(D) Amplitude of seismic waves

Ans: D

Amplitude of seismic waves

Question: 13

Thermopile works on the principle of

(A) Thomson effect

(B) Peltier effect

(C) Joule effect

(D) See beck effected

Ans: D

See beck effected

Question: 14

A man is sitting in a boat which is floating in pond. If the man drinks some water from the pond, the level of water in the pond will

(A) Remain stationary

(B) Rise a little

(C) Fall a little

(D) None of these

Ans: A

Remain stationary

Question: 15

Decibel is the unit of physical quantity used for

(A) the intensity of heat

(B) the intensity of sound

(C) the speed of light

(D) the frequency of radio waves

Ans: B

the intensity of sound

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