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The figure shows the location of a sourc...

The figure shows the location of a source and detector at time t = 0. The source and detector are moving with velocities `v_s = 5hati m s^(-1) and v_D = 10 hatj ms^(-1)` respectively . The frequency of signals received by the detector at the moment when the source cros the origin is (the frequency of the source is 100 Hz . Velocity bof sound `330 m s^(-1)` .)

A

97 Hz

B

47 Hz

C

90 Hz

D

60 Hz

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The correct Answer is:
A
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