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# A certain material has refractive indices 1.56, 1.60 and 1.68 for red,

Question:

A certain material has refractive indices $1.56,1.60$ and $1.68$ for red, yellow and violet light respectively. (a) Calculate the dispersive power. (b) Find the angular dispersion produced by a thin prism of angle $6^{\circ}$ made of this material.

Solution: