A small speaker delivers \( 2 \mathrm{~W} \) of audio output. At wh...

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A small speaker delivers \( 2 \mathrm{~W} \) of audio output. At what distance from the speaker will one detect \( 120 \mathrm{~dB} \) intensity
\( \mathrm{P} \) sound

W
[Given reference intensity of sound as \( 10^{-12} \mathrm{~W} / \mathrm{m}^{2} \) ]
[JEE (Main) 2019]
(a) \( 10 \mathrm{~cm} \)
(b) \( 30 \mathrm{~cm} \)
(c) \( 20 \mathrm{~cm} \)
(d) \( 40 \mathrm{~cm} \)
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