The angle of minimum deviation for a prism is 40° and the angle of the prism is 60° . The angle of incidence in this position will be

Question

The angle of minimum deviation for a prism is 40° and the angle of the prism is 60° . The angle of incidence in this position will be (A) 30° (B) 60° (C) 50° (D) 100°

Tardigrade Admin · Accepted Answer

Angle of incidence i=(A+δm/2) =(40°+60°/2)=50°

Q. The angle of minimum deviation for a prism is $4 0^{\circ}$ and the angle of the prism is $6 0^{\circ}$ . The angle of incidence in this position will be

$3 0^{\circ}$

$6 0^{\circ}$

$5 0^{\circ}$

$10 0^{\circ}$

Angle of incidence $i = \frac{A + δ _{m}}{2}$
$= \frac{4 0 ^{\circ} + 6 0 ^{\circ}}{2} = 5 0^{\circ}$

Q. The angle of minimum deviation for a prism is 40∘ and the angle of the prism is 60∘ . The angle of incidence in this position will be

30∘

60∘

50∘

100∘