Physics Gk - 1

Question: 1

Hydrogen fuel cell vehicles produces on the following exhaust

(A) NH₃

(B) CH₄

(C) H₂O

(D) H₂O₂

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°

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

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

Question: 5

Cavitation is a special application property exhibited only by

(A) audible sound

(B) infrasonic

(C) ultrasonic sound

(D) audible sound