Loudness of a sound is directly proportional to the square of:

Amplitude

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Frequency

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Both Frequency and Amplitude

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None of these

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Solution

The correct option is A
Amplitude

The loudness of a sound is directly proportional to the square of the amplitude. The larger the amplitude, the louder the sound. The loudness of a sound is measured in decibels (dB).

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Similar questions

Complete the following sentences :

(a) The pitch of sound increases if its frequency ......................................

(b) If the amplitude of a sound is halved, its loudness becomes ......................

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