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Two light waves having the same waveleng...

Two light waves having the same wavelength `lambda` in vacuum are in phase initially. Then the first ray travels a path of length `L_(1)` through a medium of refractive index `mu_(1)`. Then second ray travels a path of length `L_(2)` throug a medium of refractive index `mu_(2)`. The two waves are then combined to observed interference effects. The phase difference between the two, when they interfere, is

A

`2pi/lambda*(L_2-L_1)`

B

`2pi/lambda*(n_1L_1-n_2L_2)`

C

`2pi/lambda*(n_2L_1-n_1L_2)`

D

`2pi/lambda*(L_1/n_1-L_2/n_2)`

Text Solution

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The correct Answer is:
B
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