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Question

In a prism, the refractive indices of different colours are
μV= 1.6;
μR= 1.52;
μY= 1.56.
The dispersive power of the prism is :
  1. 156
  2. 18
  3. 17
  4. Infinite

A
156
B
17
C
18
D
Infinite
Solution
Verified by Toppr

Dispersive power of prism= w=μVμRμY1

w=1.61.521.561

w=17

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