light waves producing interference have their amplitudes in the r… - Vidyadip

MCQ

light waves producing interference have their amplitudes in the ratio $3: 2$. The intensity ratio of maximum and minimum of interference fringes is

A
$36: 1$
B
$9: 4$
✓
$25: 1$
D
$6: 4$

✓

Answer

Correct option: C.

$25: 1$

$\frac{I_{\max }}{I_{\min }}=\left(\frac{\frac{a_1}{a_2}+1}{\frac{a_1}{a_2}-1}\right)^2=\frac{25}{1}$

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