Waves – 1 – 3

11. A pitch depends upon :

(a) Loudness
(b) Speed sound
(c) Frequency
(d) None of these

ANSWER

EXPLANATION

12. Sound waves are _______ in nature.

(a) Electromagnetic
(b) Longitudinal 
(c) Transverse
(d) None of these

ANSWER

EXPLANATION

13. The velocity of sound wave in air is :

(a) 330 m/sec
(b) 331 m/sec
(c) 332 m/sec
(d) 333 m/sec

ANSWER

EXPLANATION

14. A human being can hear a sound of frequency ranging _______ .

(a) 20 Hz to 20 kHz
(b) Below 20 Hz
(c) Above 20 Hz
(d) None of these

ANSWER

EXPLANATION

15. Velocity of sound in vaccum is given by :

(a) 332 m/sec
(b) 0
(c) Infinity
(d) None of these

ANSWER

EXPLANATION

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