Published by:
CGP EDU Academic Team
Published on: September 12, 2026
Two sources of sound placed close to each other, are emitting progressive waves given by 
and 
An observer located near these two sources of sound will hear
A
4 beats per second with intensity ratio 25 : 16 between waxing and waning.
B
8 beats per second with intensity ratio 25 : 16 between waxing and waning.
C
8 beats per second with intensity ratio 
between waxing and waning.
between waxing and waning. D
4 beats per second with intensity ratio 81:1 between waxing and waning.
Text Solution
Verified by ExpertsThe correct answer is:
D
Given: 
or 
or 
And 
or 
or 
Number of beats heard per second
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