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The refractive indices for the light of ...

The refractive indices for the light of violet and red colours of any material are 1.66 and 1.64 respectively. If the angle of prism made of this material is `10^(@)`, then angular dispersion will be

A

`0.20^(@)`

B

`0.10^(@)`

C

`0.40^(@)`

D

`1^(@)`

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The correct Answer is:
A
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