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# In a prism, the refractive indices of different colours areμV= 1.6;μR= 1.52; μY= 1.56.The dispersive power of the prism is :1561817Infinite

A
156
B
17
C
18
D
Infinite
Solution
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#### Dispersive power of prism= w=μV−μRμY−1w=1.6−1.521.56−1w=17

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