What happens if angle of incidence is more than critical angle?

What do you mean by critical angle?

How does the angle of deviation vary with the angle of incidence in case of a prism ?What is the angle fo minimum deviation?

A ray of light falls on a mirror normally.What are the values of the angle of incidence and the angle of refelection?

Angle of incidence is equal to angle of reflection

A ray of light travelling in water is incident on its surface open to air.The angle of incidence is theta ,which is less than the critical angle .Then,there will be

How polarising angle is related to critical angle.?

Angle of incidence is equal to the angle of reflection.