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The refractive indices of material of a ...

The refractive indices of material of a prism for blue and red colours are 1.532 and 1.514 respectively. Calculate angular dispersion produced by the prism if angle of prism is `8^(@)`

A

`0.144^(@)`

B

`0.122^(@)`

C

`0.133^(@)`

D

`0.111^(@)`

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