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+1 vote
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in Physics by (84.3k points)
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Two beams of red and violet colours are made to pass separately through a prism (angle of the prism is ` 60degree`). In the position of minimum deviation, the angle of refraction will be
A. `20^(@)` for both the colours
B. greater for the violet colour
C. greater for the red colour
D. equal but not `30^(@)` for both the colours

1 Answer

+1 vote
by (81.7k points)
 
Best answer
Correct Answer - A
For mimimum deviation
`i=e` and `r_(1)=r_(2)=A//2=30^(@)`
which is independent of nature of light.
Both the lights are set for minimum deviation so angle of
refraction will be `30^(@)` for both colours.
image

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