Question

A ray of light falls on one face of an equilateral prism at an angle of45degree and emerges out at an angle of 43degree. Find the angle of deviation

Answer 1

Answer:

Explanation:

Given A ray of light falls on one face of an equilateral prism at an angle of 45 degree and emerges out at an angle of 43 degree. Find the angle of deviation

We know that

A = 60 degree (since equilateral)

I = 45 degree

e = 43 degree

We need to find angle of deviation.

We know that

Angle of deviation = i + e – A

                                   = 45 + 43 – 60

                                    = 88 – 60

                                    = 28 degree