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In the figure shown, an observer O1 floa...


In the figure shown, an observer `O_1` floats (static) on water surface with ears in air while another observer `O_2` is moving upwards with constant velocity `V_1=(V)/(5)` in water. The source moves down with constant velocity `V_S=(V)/(5)` and emits sound of freqeuncy `f`. The velocity of sound in air is `V` and that in water is `4V`. For the situation shown in figure.

A

The wavelength of the sound received by `O_(1)` is `(4V)/(5f)`

B

The wavelength of the sound received by `O_(1)` is `V //f`

C

The wavelength of the sound received by `O_(1)` is `(21f)/(16)`

D

The wavelength of the sound received by `O_(1)` is `(16V)/(5f)`

Text Solution

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The correct Answer is:
A, C, D
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