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  4. The loudness and pitch of a sound note depends on

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Q. The loudness and pitch of a sound note depends on

KCETKCET 2006

Solution:

Loudness of sound note depends on intensity ' according to relation,
$L = 10 \,log _{10 }\left(\frac{I}{I_{0}}\right) $
Here,$I_0$ is the intensity of minimum audible sound.
Pitch is the characteristics of sound that depends on frequency. It determines the shrillness and graveness of sound.