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NEET 2011 (AIPMT, Prelims) · Wave Basics & Properties of Sound

Wave Basics & Properties of Sound question from NEET 2011 (AIPMT, Prelims)

Q33NEET 2011 · AIPMT · PRELIMSEasy

Wave Basics & Properties of Sound

Sound waves travel at 350 m/s through a warm air and at 3500 m/s through brass. The wavelength of a 700 Hz acoustic wave as it enters brass from warm air

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Answer: (c)

Frequency stays $700$ Hz in both media, so $\lambda \propto v$ .
$\frac{\lambda_{brass}}{\lambda_{air}} = \frac{3500}{350} = 10$
So the answer is (c) increases by a factor 10.

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