Physics Gk - 1
Question: 1
Hydrogen fuel cell vehicles produces on the following exhaust
(A) NH3
(B) CH4
(C) H2O
(D) H2O2
Ans: C
H2O
Question: 2
When a body moves with simple harmonic motion, then the phase difference between the velocity and the accelerator is
(A) 0°
(B) 90°
(C) 180°
(D) 270°
Ans: B
90°
Question: 3
A body travelling with a speed of more than the velocity of sound in air is said to travel with
(A) Infrasonic speed
(B) Ultrasonic speed
(C) Hypersonic speed
(D) Supersonic speed
Ans: D
Supersonic speed
Question: 4
The three fundamental colours are
(A) blue, yellow and green
(B) yellow, green and red
(C) blue, green and red
(D) blue, yellow and red
Ans: C
blue, green and red
Question: 5
Cavitation is a special application property exhibited only by
(A) audible sound
(B) infrasonic
(C) ultrasonic sound
(D) audible sound
Ans: C
ultrasonic sound
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