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If refractive index of red, violet and y...

If refractive index of red, violet and yellow light are `1.42, 1.62` and `1.50` respectively for a medium. Its dispersive power will be

A

`0.4`

B

`0.3`

C

`0.2`

D

`0.1`

Text Solution

Verified by Experts

The correct Answer is:
A
`omega=(mu_(V)-mu_(R))/(mu_(Y)-1)=(1.62-1.42)/(1.5-1)=0.4`
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