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Question

Physics Question on Waves

Ratio of intensities of two waves is 9:19 : 1. If these two are superimposed, what is the ratio of maximum and minimum intensities?

A

9:01

B

3:01

C

4:01

D

5:03

Answer

4:01

Explanation

Solution

Ratio of the intensities = 9 : 1 ? Ratio of the amplitudes = 3 : 1 On superposition, MaximumIntensityMinimumIntensity=(3+1)2(3−1)2=4:1.\frac{Maximum Intensity}{Minimum Intensity}=\frac{\left(3+1\right)^{2}}{\left(3-1\right)^{2}}=4:1.