In the figure shown an observer O_(i)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_(2) = v//5 emits sound of frequency /. The velocity of sound in air is v and that in water is 4v. For the situation shown in figure:

In the figure shown an observer O_(i)floats (static) on water surface

1.	In the figure shown an observer O_(i)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_(2) = v//5 emits sound of frequency /. The velocity of sound in air is v and that in water is 4v. For the situation shown in figure:
Answer» The wave LENGTH of the sound RECEIVED by `O_(1)` is4v/5f The wave length of the sound received by `O_(1)` is v/f The frequency of the sound received by `O_(2)` is 2 if/ 16 The wavelength of the sound received by is`(4v)/(7f)` ANSWER :A::C::D

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