PG TRB Model Question Paper for Physics with Answer - 1

Question: 1

Mica is used in an electric iron because it is a

(A) Good conductor of heat

(B) Bad conductor of heat

(C) Good conductor of electricity

(D) Bad conductor of electricity

Question: 2

Which one of the following pairs of rays is electromagnetic in nature?

(A) Alpha rays and beta rays

(B) X-rays and gamma rays

(C) Beta rays and gamma rays

(D) Cathode rays and X-rays

Question: 3

X-rays cannot pass through

(A) Wood

(B) Flesh

(C) Glass

(D) Bone

Question: 4

The carbon filament is invented by

(A) Ampere

(B) Edison

(C) Volt

(D) Newton

Question: 5

Which of the following device is fully duplex?

(A) Walky-talky

(B) Radio

(C) Mobile phone

(D) Loud speaker