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Lateral Displacement

The refractiv...

Question

The refractive indices for light of violet , yellow and red colours for glass are respectively 1.632,1.620 and 1.613. Find the dispersive power of glass.

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Solution

Dear Student,

$D i s p e r s i v e p o w e r i s, ω = \frac{n_{v i o l e t} - n_{r e d}}{n_{y e l l o w} - 1} = \frac{1.632 - 1.613}{1.62 - 1} = \frac{. 019}{. 62} = 0.306$

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