The ratio of intensities of two sound wave is 16 : 25. The ratio of their amplitudes is

1 : 2

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5 : 4

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2 : 1

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4 : 5

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Solution

The correct option is D 4 : 5
The intensity of sound is directly proportional to the amplitude of the wave. i.e. $I \propto A^{2}$ . So if the ratio of intensities of two sound wave is $16 : 25$ then the ratio of their amplitudes is $4 : 5$ .

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