One face of a prism with a refrective angle of `30^@` is coated with silver. A ray of light incident on another face at an angle of `45^@` is refracted and reflected from the silver coated face and retraces its path. What is the refractive index of the prism?

State the conditions under which total internal reflection occurs. One face of a prism with a refracting angle of 30^(@) is coated with silver. A ray incident on another face at an angle of 45^(@) is refracted and reflected from the silver coated face and retraces its path. Find the refractive index of the material of the prism.

The face AC of a prism ABC of refracting angle 30^@ is silvered . A ray is incident on face AB at an angle of 45^@ as shown in figure . The refracted ray undergoes reflection at face AC and retraces its path . The refractive index of the prism is

A prism ABC of angle 30^(@) has its face AC silvered. A ray of light incident at an angle of 45^(@) at the face AB retraces its path after refraction at face AB and reflection at face AC . The refractive index of the material of the prism is

A prism ABC of angle 30^(@) has its face AC silvered. A ray of light incident at an angle of 45^(@) at the face AB retraces its path after refraction at face AB and reflection at face AC . The refractive index of the material of the prism is

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 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 face of the glass prism is silver polished. A light ray falls at an angle of 45^@ on the other face. After reflection it is subsequently reflected from the silvered face and then retraces its path. The refracting angle of prism is 30^@ . The refractive index of the prism is