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Given below are two statements :one is l...

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.

A

A is correct but R is not correct

B

A is not correct but R is correct

C

Both A and R are correct and R is the correct explanation of A

D

Both A and R are correct but R is not the correct explanation of A

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