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What is the unit of loudness?...

What is the unit of loudness?

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What is the level of loudness of a sound of intensity 10^(-12) W//m^2 ?

(a) What is the relation between loudness and frequency ? (b) What is the unit of intensity of sound ? (c) Derive the relation v = v lamda where the letters have their usual meanings.

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The ratio of loudness of sound produced by two sources is 2 : 3 . What is the ratio of amplitude of their vibrations ?

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