Question

For the given incident ray as shown in figure, the condition of total internal refraction of this ray the required refractive index of prism will be

(a) √(3+1)/2

(b) √2+1/2

(c) √(3/2)

(d) √(7/6)

Answer 1

Correct option  (c) √(3/2)

Explanation:

Applying snell's law refraction at A we get

Applying the condition of total internal reflection at B, we get