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The intensity ratio of waves is 25 9 What is the...

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The intensity ratio of waves is 25 : 9. What is the ratio of their amplitudes?

Answer & Solution
Correct Answer: Option D
In general, the intensity of a wave is proportional to the square of its amplitude. This has an important implication: relative intensity can be obtained by squaring relative amplitude.
I α a2
So if the intensity ratio is 25:9, the amplitude ratio will be 5:3.
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