A source of sound of frequency 256 Hz is moving rapidly towards a wall with a velocity of 
. If sound travels at a speed of 
, then number of beats per second heard by an observer between the wall and the source is
Text Solution
Verified by ExpertsThe correct answer is:
D
For a stationary observer between wall and source,
frequency from direct source 
frequency from reflected sound 
So, no beats will be heard.
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