The first resonance length of a resonance tube is 40 \( \mathrm{P} ...
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The first resonance length of a resonance tube is 40
\( \mathrm{P} \) \( \mathrm{cm} \) and the second resonance length is \( 122 \mathrm{~cm} \). The
W third resonance length of the tube will be
(1) \( 200 \mathrm{~cm} \)
(2) \( 202 \mathrm{~cm} \)
(3) \( 203 \mathrm{~cm} \)
(4) \( 205 \mathrm{~cm} \)
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