Question

Two waves of the same pitch have amplitudes in the ratio 1 : 2. What will be the ratio of their
(i) loudness (ii) frequencies?
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Answer 1

Explanation:

Consider two waves of the same pitch having amplitude as A1 and A2 . Let the loudness of both the waves be L1 and L2 . It is known that loudness is directly proportional to square of the amplitude. Thus, the loudness of both the wave are in ratio of 1:9 .