[" The prism shown in the figure has one side "],[" silvered.The angle of the prism is "30^(@)" and "],[mu=sqrt(2)" .If the incident ray retraces its "],[" initial path the angle of incidence is "]

If one face of a prism angle 30^(@) and mu=sqrt( 2) is silvered, the incident ray retraces its initial path. What is the angle of incidence ?

If one face of a prism angle 30^(@) "and" mu= sqrt2 is silvered , the incident ray retraces its initial path. What is the angle of incidence?

If one face of a prism angle 30^(@) "and" mu= sqrt2 is silvered , the incident ray retraces its initial path. What is the angle of incidence?

If one face of a prism angle 30^(@) "and" mu= sqrt2 is silvered , the incident ray retraces its initial path. What is the angle of incidence?

A ray is incident at an angle of incidence i on one surfcae of a small angle prism (with angle of prism A) and emerges normally from opposite surface. If refractive index of material of prism is mu then the angle of incidence is nearly equal to

A prism having refractive index 1.414 and refracting angle 30^(@) has one of the refracting sufraces silvered .A beam of light incident on the other refracting surface will retrace its path, if the angle of incidence is