TRB Physics Question Bank - 2

Question: 6

Which of the following is not matched?

(A) Celsius unit of heat

(B) Nautical mile unit of distance

(C) Decibel unit of sound

(D) Horse power unit of power

Question: 7

Which mirror is used to obtain a parallel beam from a source of light?

(A) Glass

(B) Plane

(C) Convex

(D) Concave

Question: 8

A fan produces a feeling of comfort during hot weather, because

(A) Our perspiration evaporates rapidly

(B) Conductivity of air increases

(C) Fan supplies cool air

(D) Our body radiates more heat in air

Question: 9

Which of the following is not a conductor?

(A) Air

(B) Lead

(C) Platinum

(D) Mercury

Question: 10

Which one among the following radiations carries maximum energy?

(A) Infrared rays

(B) X rays

(C) Ultraviolet rays

(D) Gamma rays