Signal to noise ratio of microphone is defined as the ratio of output when the sound pressure is __________ to the output in the absence of any sound signal.

1.

Signal to noise ratio of microphone is defined as the ratio of output when the sound pressure is __________ to the output in the absence of any sound signal.

[A].	0.5 Pa
[B].	0.2 Pa
[C].	0.1 Pa
[D].	0.01 Pa

Answer: Option C

Explanation:

0.1 Pa (= 0.5 x 10^-4 W/m²) is taken as standard sound pressure for defining S/N ratio of microphones.

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