The two waves having intensities in the ratio $1: 9$ produce interference. The ratio of the maximum

Question

The two waves having intensities in the ratio $1: 9$ produce interference. The ratio of the maximum to the minimum intensity is equal to\

Professor PC Thomas Classes · Answer

$I_{1}: I_{2}=1: 9$ Intensity is square of amplitude.\ $\mathrm{a}_{1}^{2}: \mathrm{a}_{2}^{2}=1: 9$\ $a_{1}: a_{2}=1: 3$\ $\frac{I_{	ext {max }}}{I_{	ext {min }}}=\frac{\left(a_{1}+a_{2}ight)^{2}}{\left(a_{1}-a_{2}ight)^{2}}=\frac{(1+3)^{2}}{(1-3)^{2}}$\