Define the angle of minimum deviation.
(N/A) The angle of minimum deviation is defined as the smallest angle of deviation produced by a prism when a light ray passes through it.
It occurs when the angle of incidence is equal to the angle of emergence $(i = e)$,which implies that the light ray inside the prism travels parallel to the base of the prism.
At this condition,the angle of refraction at both faces is equal $(r_1 = r_2 = r = A/2)$,where $A$ is the angle of the prism.
It occurs when the angle of incidence is equal to the angle of emergence $(i = e)$,which implies that the light ray inside the prism travels parallel to the base of the prism.
At this condition,the angle of refraction at both faces is equal $(r_1 = r_2 = r = A/2)$,where $A$ is the angle of the prism.
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