A source of sound emitting a note of frequency 200 Hz moves towards an observer with a velocity v equal to the velocity of sound. If the observer also moves away from the source with the same velocity v, the apparent frequency heard by the observer is [MP PMT 1990]

If assertion is true but reason is false.

A source of sound emitting a note of frequency 200 Hz moves towards an

1.	A source of sound emitting a note of frequency 200 Hz moves towards an observer with a velocity v equal to the velocity of sound. If the observer also moves away from the source with the same velocity v, the apparent frequency heard by the observer is [MP PMT 1990]
A.	50 Hz
B.	100 Hz
C.	If assertion is true but reason is false.
D.	200 Hz
Answer» E.

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A source of sound emitting a note of frequency 200 Hz moves towards an observer with a velocity v equal to the velocity of sound. If the observer also moves away from the source with the same velocity v, the apparent frequency heard by the observer is [MP PMT 1990]

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