Sound of frequency 
from a stationary source is reflected from an object approaching the source at 
, back to a stationary observer located at the source. The speed of sound in air is 
. The frequency of the sound heard by the observer is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
The frequency of sound from the stationary source reaches the object which is approaching towards the source is
where, 
frequency of source, 
speed of sound in air and 
speed of the object.
The frequency of reflected sound from the object heard by the stationary observer located at the source is
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