Q 12-10-087JEE MainJEE Main 2023 (6 Apr, Shift 2)Easy
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 changes 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.
Answer: (D) Both A and R are correct and R is the correct explanation of A
The same thickness holds a different number of wavelengths in media of different refractive index ($\lambda_m=\lambda/\mu$), so the phase accumulated differs. R explains A.
Solution by Sreeraj P, M.Sc Physics