AP EAMCET · PHYSICS · Wave Optics
Two coherent sources of intensity ratio \(9: 4\) produce interference. The intensity ratio of maxima and minima of the interference pattern is
- A \(13:6\)
- B \(5:1\)
- C \(25:1\)
- D \(3:2\)
Answer & Solution
Correct Answer
(C) \(25:1\)
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & \text { } \frac{I_{\max }}{I_{\min }}=\left(\frac{\sqrt{I_1}+\sqrt{I_2}}{\sqrt{I_1}-\sqrt{I_2}}\right)^2=\left(\frac{\sqrt{9}+\sqrt{4}}{\sqrt{9}-\sqrt{4}}\right)^2 \\ & =\left(\frac{3+2}{3-2}\right)^2=25\end{aligned}\)
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