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The deviation caused for red, yellow and...

The deviation caused for red, yellow and violet colours for crown glass prism are `2.84^(@),3.28^(@)` and `3.72^(@)` respectively. The dispersive power of prism material is:

A

`(11)/(41)`

B

`(92)/(250)`

C

`(117)/(250)`

D

`(22)/(57)`

Text Solution

Verified by Experts

The correct Answer is:
A
Dispersive power is given by
`omega=(delta_(v)-delta_(r))/(delta_(y))=(3.72-2.84)/(3.28)=(11)/(41)`.
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