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Question: If the ratio of intensities of two waves is 1 : 25, then the ratio of their amplitudes will be....

If the ratio of intensities of two waves is 1 : 25, then the ratio of their amplitudes will be.

A

1 : 25

B

5 : 1

C

26 : 24

D

1 : 5

Answer

1 : 5

Explanation

Solution

I1I2=125; 6mu 6mu∴a12a22=125⇒a1a2=15\frac{I_{1}}{I_{2}} = \frac{1}{25};\mspace{6mu}\mspace{6mu}\therefore\frac{a_{1}^{2}}{a_{2}^{2}} = \frac{1}{25} \Rightarrow \frac{a_{1}}{a_{2}} = \frac{1}{5}