The refractve index of a glass is 1.520 ...

The refractve index of a glass is 1.520 for red light and 1.525 for blue light . Let `D_(1) and D_(2)` be the angles of minimum deviation for red light and blues light respectively in a prism of this glass. Then

`D_1 gt D_2`

`D_1 = D_2`

`D_1 lt D_2`

`D1` can be less than or greater than `D_2` depending upon the angle of prism

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