Two beam of red and violet colors are made to pass separately through a prism (angle of the prism is `60^(@)`). In the position of minimum deviation, the angle of refraction will be

Options

A. greater for red colour
B. equal but not `30^(@)` for both the colours
C. greater for violet colour
D. `30^(@)` for both the colours

Explanation

Here, angle of prism, `A=60^(@)`
For minimum deviation, A = 2r
or `r=(A)/(2)=(60^(@))/(2)=30^(@)` for both colours.