Q.

If refractive index of red, violet and yellow lights are 1.42, 1.62 and 1.50 respectively for a medium. Its dispersive power will be

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a

0.4

b

0.3

c

0.2

d

0.1

answer is A.

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Detailed Solution

ω=μV−μRμY−1=1.62−1.421.5−1=0.4
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