A monochromatic beam of light is travell...

A monochromatic beam of light is travelling from medium A of refractive index `n_(1)` to a medium B of refractive index `n_(2)` . In the medium A , there are x number of waves in certain distance . In the medium B , there are y number of waves in the same distance . Then , refractive index of medium A with respect to medium B is ...

A

`sqrt(x/y)`

B

`x/(y-x)`

C

`x/y`

D

`y/x`.

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