Question

If the ratio of two sound intensities is $1:9$, the ratio of their amplitude of sound wave will be:

• A. $\frac{1}{3}$
• B. $\frac{1}{4}$
• C. $\frac{1}{8}$
• D. $\frac{1}{18}$

Answer 1

The correct option is A $\frac{1}{3}$

$\frac{A_1}{A_2}=\sqrt{\frac{I_1}{I_2}}=\frac{1}{3}$

$\therefore$ Option $A$ is correct.