List of top Physics Questions on Reflection Of Light By Spherical Mirrors asked in JIPMER

Two plane mirrors are inclined to each other ray of light incident on one face at $ 30{}^\circ $ after reflection from the second retraces the path. What is the angle between the mirrors?

The critical angle for glass-water boundary is C. If $ {{\mu }_{g}}=1.5 $ 1.5 and $ {{\mu }_{\omega }}=\frac{4}{3} $ then the value of C is: