One of the refracting surfaces of a prism of angle of `30^(@)` is silvered. A ray of light incident at an angle of `60^(@)` retraces its path. The refractive index of the material of prism is

One of the refracting surfaces of a prism of angle 30^(@) is silvered. A ray of light incident at angle of 60^(@) retraces its path. The refractive index of the material of prism is

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

A ray of monochormatic light is incident on one refracting face of a prism of angle 75^(@) . It passes through the prism an is incident on the other at the critical angle. If the refractive index of the material of the prism is sqrt(2) , the angle of the first face of the prism is

A monochromatic ray of light is incident normally on one of the refracting surfaces of a prism . The emergent ray grazes the second refracting surface . What is the angle of the prism if the refractive index of the material of the prism is 1.6 ?

A monochromatic ray of light is incident normally on one of the refracting surfaces of a prism . The emergent ray grazes the second refracting surface . What is the angle of the prism if the refractive index of the material of the prism is 1.6 ?