Sound WavesMedium

Question

An underwater sonar source operating at a frequency of 60 kHz directs its beam towards the surface. If velocity of sound in air is 330 m/s, wavelength and frequency of the waves in air are : -

Options

A.5.5 mm, 60 kHz
B.3.30 m, 60kHz
C.5.5 mm, 30 kHz
D.5.5 mm, 80 kHz

Solution

fair = fwater ⇒ λair = = 5.5 mm

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