Question

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

The correct option is D

1 : 5

$\frac{I_1}{I_2}=\frac{1}{25};\therefore \frac{a_1^2}{a_2^2}=\frac{1}{25}\Rightarrow \frac{a_1}{a_2}=\frac{1}{5}$