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
Ans: 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
Ans: B
X-rays and gamma rays
Question: 4
The carbon filament is invented by
(A) Ampere
(B) Edison
(C) Volt
(D) Newton
Ans: B
Edison
Question: 5
Which of the following device is fully duplex?
(A) Walky-talky
(B) Radio
(C) Mobile phone
(D) Loud speaker
Ans: C
Mobile phone
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