Angle of a prism whose one surface is ${30}^{\circ }$ and its refractive index is $\sqrt{2}$. At what angle of incidence, a ray should be incident on the surface so that after reflection from the silvered surface, it retraces its path

Q. Angle of a prism is ${30}^{\circ }$ and its refractive index is $\sqrt{2}$and one of the surface is silvered. At what angle of incidence, a ray should be incident on one surface so that after reflection from the silvered surface, it retraces its path

Q. Angle of prism is ${30}^{\circ }$ and its refractive index is $\sqrt{2}$ and one of the refracting faces is silvered. At what angle of incidence, a ray should be incident on one surface so that after reflection from the silvered surface, it retraces its path

Q. A ray of light on a prism having one silvered surface, at an incident angle of ${45}^{\circ }$ as shown in figure. After refraction and reflection it retraces the path, then the refractive index of prism material is (prism angle is ${30}^{\circ }$)

Q. One of the refracting surfaces of a prism, of refractive index 2 is silvered. The angle of the prism is equal to the critical angle of a medium of refractive index 2. A ray of light incident on the unsilvered surface passes through the prism and retraces its path after reflection at the silvered face. Then the angle of incidence of the unsilvered surface is

Q. An isosceles prism of angle $A={30}^o$ has one of its surfaces silvered. Light rays falling at an angle of incidence ${60}^o$ on the other surface retrace their path after reflection from the silvered surface. The refractive index of prism material is