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Angle of Deviation

The refractiv...

Question

The refractive indices of crown glass prism for C, D and F lines are 1.527, 1.530 and 1.535 respectively. The dispersive power of the crown glass prism is :

A

0.02509

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B

0.03516

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C

0.0461

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D

0.01509

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Solution

The correct option is D 0.01509
Dispersive power, $w = \frac{μ_{F} - μ_{C}}{μ_{D} - 1}$
$= \frac{1.535 - 1.527}{1.530 - 1}$
$= 0.01509$

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