Question:

A transparent solid cylindrical rod has a refractive index of 2/√3 It is surrounded by air. A light ray is incident at the mid- point of one end of the rod as shown in the figure,The incident angle for which the light ray grazes along the wall of the rod

Options :

  • (a) sin-1 (1/2)
  • (b) sin-1 (√3/2)
  • (c) sin-1 (2/√3)
  • (d) sin-1 (1/√3)

Answer :

(d) sin-1 (1/√3)

Answer Steps :

step 1

step 2

step 3

Video Tutorial