MHT CET · Physics · Wave Optics
Light waves from two coherent sources arrive at two points on a screen with path difference of zero and \(\lambda / 2\). The ratio of the intensities at the points is
- A two : one
- B one:two
- C one: one
- D infinity: one
Answer & Solution
Correct Answer
(D) infinity: one
Step-by-step Solution
Detailed explanation
When path difference is zero, the resultant intensity \(I=4 I_{0}\), where \(I_{0}\) is the intensity of the individual waves.
When the path difference is \(\frac{\lambda}{2}\), the intensity \(I^{\prime}=0\)
\(\therefore \frac{I}{I^{\prime}}=\frac{4 I_{0}}{0}=\infty\)
When the path difference is \(\frac{\lambda}{2}\), the intensity \(I^{\prime}=0\)
\(\therefore \frac{I}{I^{\prime}}=\frac{4 I_{0}}{0}=\infty\)
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