Question

A ray of light incident on face of an equilateral prism its angle of 55 gets deviated through 40 find its angle of emergence

Answer 1

Explanation:

i + e = A+ d

i --->angle of incidence

e--->emergence

A--->angle of prism

d---->angle of deviation

i=e= (3/4)A

(3/4)A+(3/4)A=A+d

1.5 A-A=d

d=A/2

A=60 degree (equilateral prism)

d=30 ..