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Question 5
In order to reduce the loudness of a sound we have to

(a) Decrease its frequency of vibration of the sound.
(b) Increase its frequency of vibration of the sound.
(c) Decrease its amplitude of vibration of the sound.
(d) Increase its amplitude of vibration of the sound.


Solution

The answer is (c).
Loudness of the sound depends only on amplitude of the wave.

Physics
NCERT Exemplar
Standard VIII

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