1.

At t = 0, a source of sonic oscillations S and an observer O start moving along x and y axes witn velocity 5 m/s and 10 m/s respectively. The figure gives their position at t = 0. The frequency of sonic oscillations of source is 1000 Hz. Obtain the frequency of signals recieved by the observer after 5 seconds. Speed of sound is 330 m/s

Answer»

1020 HZ
1010 Hz
1030 Hz
1100 Hz

ANSWER :C


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