Top 1000+ Physics MCQS - 3
Question: 11
An air bubble inside water behaves as a
(A) concavo convex lens
(B) plano-convex lens
(C) concave lens
(D) convex lens
Ans: C
concave lens
Question: 12
According to Einstein’s theory of relativity when a body moves with a velocity comparable to the velocity of light, its
(A) mass and length increase
(B) mass and length decrease
(C) length decreases but mass increases
(D) length increases but mass decreases
Ans: D
length increases but mass decreases
Question: 13
The temperature of the boy of a healthy man is
(A) 37° K
(B) 37° C
(C) 98.4° C
(D) 98.4° K
Ans: B
37° C
Question: 14
Where is National Remote Sensing Agency situated?
(A) Bangalore
(B) Hyderabad
(C) Ahmedabad
(D) Nagpur
Ans: B
Hyderabad
Question: 15
Red light is used as danger signal because it
(A) absorbs least in air
(B) produces least chemical reactions
(C) is comfortable for eyes
(D) is scattered least
Ans: D
is scattered least
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