JEE Mains · Physics · STD 12 - Ray optics and optical instruments
- JEE Mains 2023
- Medium
- MCQ
Given below are two statements: one is labelled as Assertion \(A\) and the other is labelled as Reason \(R\) Assertion \(A\): The phase difference of two light waves change if they travel through different media having same thickness, but different indices of refraction. Reason \(R:\) The wavelengths of waves are different in different media. In the light of the above statements, choose the most appropriate answer from the options given below
Pick an option to check your answer.
Answer & Solution
Correct Answer
(C) Both \(A\) and \(R\) are correct and \(R\) is the correct explanation of \(A\)
Step-by-step Solution
Detailed explanation
As medium changes, optical path changes.
Also, \(\frac{\Delta x}{\lambda}=\frac{\Delta \phi}{2 \pi}\)
Hence phase difference changes.
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