Consider ten identical sources of sound all giving the same frequency but having phase angles which are random. If the average intensity of each source is 
, the average of resultant intensity I due to all these ten sources will be
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
In case of interference of two waves resultant intensity
If φ φ varies randomly with time, so 
⇒ ⇒ 
For n identical waves, 
here 
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