A sound wave of frequency v Hz initially travels a distance of 1 km in air , then , it gets reflected into a water reservoir of depth 600 m . The frequency of the wave at the bottom of the reservoir is
`V_("air " ) = 340 m//s V _( " water ") = 1484 m//s)`

Options

A. `gt vHz`
B. `lt vHz`
C. vHz
D. 0 (the sound wave gets attenuated by the water completely)

Answer

C

Explanation

Answer(3) The frequency of the wave at the bottom of the reservoir does not change when it is reflected into a water reservoir after travelling certain distance.