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Light of wavelenght 4000 A is incident a...

Light of wavelenght `4000 A` is incident at small angle on a prim of apex angle `4^(@)` . The prism has `n_(v)=1.5` and `n_(r)=1.48` . The angle of dispersion produced by the prism in this light is:

A

`0.2^(@)`

B

`0.08^(@)`

C

`0.192^(@)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
D
Dispersion will not occur for a light of single wavelength `lambda=4000Å`
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