A ray strikes the mirror normally, what is the angle of incidence?

If incident ray strikes the mirror at 90^@ , what will be the angle of reflection?

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

A ray of light strikes a plane mirror at an angle of incidence 45^@ as shown in the figure 9.115. After reflection, the ray of passess through a prism of refractive index 1.5 whose apex angle is 4^@ . Through what angle must the mirror be rotated if the total deviation of hte ray be 90^@ ?

A ray of light falls on a transparent glass slab of refracative index 1.62. If the reflected ray and refracted rays are mutually perpendicular. What is the angle of incidence? Give calculations.

Describe an activity to show that the incident ray , the reflected ray and the normal at the point of incidence lie in the same plane.

A ray of lght strikes a glass plate at an angle of incidence 57^@ .If the reflected and refracted rays are perpendicular to each other,find the refractive index of glass.