Questions
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 I0, the average of resultant intensity I due to all these ten sources will be
detailed solution
Correct option is B
In case of interference of two waves resultant intensity I=I1+I2+2I1I2cosφIf ϕ varies randomly with time, so (cosφ)av=0⇒I=I1+I2For n identical waves, I=I0+I0+.......=n I0here I=10 I0.Talk to our academic expert!
Similar Questions
Two loud speakers are being compared, and one is perceived to be 32 times louder than the other. What will be the difference in intensity levels between the two when measured in decibels?
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