A ray of light is incident normally on one of the refracting surfaces of a prism of refracting angle 60^@. The emergent ray grazes the other refracting surface. Find the refractive index of the material of the prism.

A ray of light is incident normally on one of the refracting surfaces

1.	A ray of light is incident normally on one of the refracting surfaces of a prism of refracting angle 60^@. The emergent ray grazes the other refracting surface. Find the refractive index of the material of the prism.
Answer» 1.155 1.75 1.25 1 Answer :A