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Loudness of sound increases with
(a)increase in amplitude of the wave
(b)decrease in density of the medium.
(c)decrease in distance of the sound source
(d)increase in surface area of the vibrating body

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Important Questions on Sound
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It is observed that during march-past we hear a base drum distinctly from a distance compared to the side drums.
Name the characteristic of sound associated with the above observation.

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Reason: If sound waves have a large amplitude then the sound will be loud.

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