Question

calculate the refractive index of the material of an equilateral prism for which the angle of minimum deviation is π/3 radian​

Answer 1

A=60 o

μ= 2sinA

sin( 2A+δ m ) ⇒ 3= sin30ó sin( 260 o +δ m)

sin( 260 o +δ m )=3 × 21 = 23 =sin60 o

60 o +δ m

=120 o

−⇒δ m

=120 o

−60 o

=60 o