1. A sound wave travels from east to west, in which direction do the particles of air move?
(A) Up and down
(B) North - south
(C) East – west
(D) None of these
2. In which medium sound travels faster ?
(A) Gas
(B) Liquid
(C) Solid
(D) None of these
3. What is the name of short duration wave?
(A) Time period
(B) Frequency
(C) Pulse
(D) Velocity
4. What is the velocity of sound in water at room temperature?
(A) 1500 m/s
(B) 330 m/s
(C) 1500 km/s
(D) 330 km/s
5. The unit of quantity on which pitch of the sound depends is :
(A) Hertz
(B) metre
(C) metre/second
(D) second
6. The unit of quantity on which loudness of sound depends is :
(A) metre
(B) Hertz
(C) metre/second
(D) second
7. Nature of sound wave is :
(A) transverse
(B) longitudinal
(C) electromagnetic
(D) seismic
8. Pitch of high frequency sound is :
(A) high
(B) low
(C) zero
(D) infinite
9. Voice of a friend is recognized by its :
(A) Pitch
(B) velocity
(C) Intensity
(D) quality
10. Sound waves in air are :
(A) Radio waves
(B) Longitudinal waves
(C) Transverse waves
(D) Electromagnetic waves
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