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If the velocity and wavelength of light ...

If the velocity and wavelength of light in air is `V_(a) "and" lambda_(a)` and that in water is `V_(a) "and" lambda_(w)` then the refractive index of water is:

A

`V_(w)/V_(a)`

B

`V_(a)/V_(w)`

C

`lambda_(w)/lambda_(a)`

D

`(V_(a)lambda_(a))/(V_(w)lambda_(w))`

Text Solution

Verified by Experts

The correct Answer is:
B
`mu_(w) = 4/3, mu_(a) = 1, mu_(w) > mu_(a)`
Refractive index of water with respect to air
`underset(a)mu_(w) = mu_(w)/mu_(a) = (c/V_(w))/(c/V_(a)) = V_(a)/V_(w)`
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