TS EAMCET · Physics · Wave Optics
In Young's double slit experiment, point \(A\) on the screen has a path difference of \(\lambda\) and point \(B\) on the screen has a path difference of \(\frac{\lambda}{4}\). What is the ratio of the intensities at point \(A\) to \(B\) ?
- A 1 : 1
- B 2 : 1
- C 1 : 2
- D 4 : 1
Answer & Solution
Correct Answer
(B) 2 : 1
Step-by-step Solution
Detailed explanation
In YDSE, let intensities of two identical coherent sources \(S_1\) and \(S_2\) is \(I_0\). Then, resultant intensity, \[ I=2 I_0 \cos ^2 \frac{\phi}{2} \] where, \(\phi=\) phase difference. When path difference is \(\lambda\), then…
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