A source emits a sound of frequency of 400 Hz, but the listener hears – McqOptions

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1.	A source emits a sound of frequency of 400 Hz, but the listener hears it to be 390 Hz. Then [Orissa JEE 2003]
A.	The listener is moving towards the source
B.	The source is moving towards the listener
C.	The listener is moving away from the source
D.	The listener has a defective ear
Answer» D. The listener has a defective ear

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