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Beats are produced by two progressive wa...

Beats are produced by two progressive waves. Maximum loudness at the waxing is x times the loudness of each wave. The value of x is ............ .

A

1

B

`sqrt 2`

C

2

D

4

Text Solution

Verified by Experts

The correct Answer is:
D
The maximum amplitude is the sum of two amplitude. i.e. a+ a= 2a
Hence, maximum intensity is proportional to `4a^2`
Loudness of one wave is given by ` x (4a^2)/(a^2) = 4`
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