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Select the correct answer out of the options given against each question and write in the box provided on rigth hand side bottom:
Two waves, whose intensities are 9:16 are made to interfere. The ratio of maximum and minimum intensities in the interference pattern is

A

`49 : 1`

B

`49 : 16`

C

`7 : 1`

D

`4 : 3`

Text Solution

Verified by Experts

Intensity ratio = 9 : 16, so amplitude ratio = 3 : 4.
`therefore` Ratio of maximum and minimum amplitudes after interference = (4 + 3) : (4 - 3) = 7 : 1
`therefore` Ratio of maximum and minimum intensities = 49 : 1
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