The ratio of amplitudes of two sound waves is 1:2 and the ratio of their frequency is 2:1. Find the ratio of their pitch.

1:2

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2:1

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1:4

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4:1

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Solution

The correct option is B 2:1

The pitch of the sound does not depend on its amplitude, it only depends on its frequency.
So, the ratio of their pitch = $\frac{f_{1}}{f_{2}} = \frac{2}{1} = 2 : 1$

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