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 monochromatic beam of light is travelling from medium A of refractiv

1.	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 :
Answer» `(x)/(y)` `(y)/(x)` `sqrt((x)/(y))` `(x)/(y-x)`. SOLUTION :(a) If x number of waves of wavelenght `lambda_(1) and y` number of waves of wavelenght `lambda_(2)` are PRESENT in same distance s, then `s = xlambda_(1) = ylambda_(2)` or "" `(x)/(y) = (lambda_(2))/(lambda_(1)) = (n_(1))/(n_(2))` `therefore (n_(1))/(n_(2)) = (x)/(y)`.

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