1.

A source of sound with natural frequency v_(0) moves uniformly along a straight line separated from a stationary observer by a distance l . The velocity of the source is equal to eta fraction of velocityof sound. Find the frequency of sound received by the observer at the moment when the source gets closest to him and also find the distance between the source and the observer at the moment, when the observer receives a frequency v = v_(0)

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ANSWER :A::B


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