Question

Angle of minimum deviation for a prism of refractive index 1.5 is equal to the angle of prism. The angle of prism is - (cos 41⁰ = 0.75)

• A. 62⁰
• B. 41⁰
• C. 82⁰
• D. 31⁰

Answer 1

Answer: (C)

82⁰

Answer 2

m = 1.5, d_m = A, Given cos 41⁰= 0.75

m = =

=

m = 2 cos

$\frac { 3 } { 2 }$ = 2 cos Ž cos = 0.75 = cos 41⁰

= 41⁰ \