COMEDK · Physics · 26. Wave Optics
The interference pattern is obtained with two coherent light sources of intensity ratio \(9: 1\).
The ratio of \(\dfrac{I_{\text {MAX }}+I_{\text {MIN }}}{I_{\text {MAX }}-I_{\text {MIN }}}\) is \(\dfrac{\alpha}{\beta}\). The values of \(\alpha\) and \(\beta\) are:
- A 5 and 3
- B 1 and 9
- C 3 and 1
- D 9 and 1
Answer & Solution
Correct Answer
(A) 5 and 3
Step-by-step Solution
Detailed explanation
Let the intensities of the two coherent sources be \(I_1\) and \(I_2\). Given the ratio \(I_1 : I_2 = 9 : 1\), we can write \(I_1 = 9k\) and \(I_2 = k\) for some constant \(k\). The amplitudes \(a_1\) and \(a_2\) are proportional to the square root of the intensities, so…
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