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When a train is approaching the observer, the frequency of the whistle is 100 cps. When it has p…



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Question From – Cengage BM Sharma WAVES AND THERMODYNAMICS SOUND WAVES AND DOPPLER EFFECT JEE Main, JEE Advanced, NEET, KVPY, AIIMS, CBSE, RBSE, UP, MP, BIHAR BOARD

QUESTION TEXT:-
When a train is approaching the observer, the frequency of the whistle is 100 cps. When it has passed observer, it is 50 cps. Calculate the frequncy when the observer moves with the train.
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