Question

The equations of two displacement sound waves propagating in a medium are given by $s_1=2$ sin $\left(200\pi t\right)$ and $s_2=5$ sin $\left(150\pi t\right)$ The ratio of intensities of sound produced is :

• A. 4:25
• B. 9:100
• C. 8:15
• D. 64:225

Answer 1

The correct option is A 4:25

$\begin{array}{c}\frac{I_1}{I_2}={\left(\frac{a_1}{a_2}\right)}^2={\left(\frac{2}{5}\right)}^2=\frac{4}{25}\\ Hence,\\ optionAiscorrectanswer.\end{array}$