Two beams of red and violet colours are made to pass separately through a prism (angle of the prism is$\ 60{^\circ}$).In the position of minimum deviation, the angle of refraction will be

Question

Dr. Abubacker · Accepted Answer

(a) At minimum deviation $\left( \delta = \delta_{m} \right)$
$r_{1} = r_{2} = \frac{A}{2} = \frac{60{^\circ}}{2} = 30{^\circ}$ (for both colours)

Q. Two beams of red and violet colours are made to pass separately through a prism (angle of the prism is$\ 60{^\circ}$).In the position of minimum deviation, the angle of refraction will be

Explanation

Reviewed by Dr. Abubacker

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