a.
iv. vacuum
c.
i. mouth organ
In which of the following mediums, does sound travel faster?
i. water
ii. iron pipe
iii. air
b. The maximum displacement of a vibrating particle from the mean position is
i. frequency
ii. amplitude.
iii. time period. iv. velocity.
Which of the following instruments produce sound due to vibration of air column?
ii. guitar
iii. sarod
iv. jal tarang
d. An echo produced by the reflection of a boy's voice from a mountain is heard 20 s after the sound is
produced. If the velocity of sound is 330 m/s, the distance between the mountain and the boy is
1. 3.3 km
ii. 6.6 km
iii. 330 m
iv. 660 m
e. Noise is produced by
i. regular vibrations
ii. irregular vibrations.
iii. mixture of regular and irregular vibrations. iv. none
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Answer:
in air the sound travels fast and
b - amplitude
Explanation:
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