A ray of light is incident on a horizontal plane mirror at an angle of incidence `30^@`. By what angle should the mirror be rotated so that the reflected ray becomes horizontal?

A ray of light is incident on a plane mirror at an angle of incidence of 30^@ . The deviation produced by the mirror is

A light ray strikes a horizontal plane mirror and gets deviated by pi//3 . By what angle should the mirror be tilted so that the reflected ray becomes vertical?

A light ray is incident normally on a plane mirror. What is its angle of incidence?

A light ray is incident normally on a plane mirror. What is the angle of incidence?

A ray of light falls normally on a plane mirror. What is the angle of incidence ?

rays of light strike a horizontal plane mirror at an angle of 45^(@) . At what angle should be a second plane mirror be placed in order that the reflected ray finally be reflected horizontally from the second mirror.

A horizontal light ray passes through a prism (mu=1.5) of angle 4^(@) .Further, it is incident on a plane mirror M , that has been placed verticall. By what angle the mirror is rotated so that the ray after reflection becomes horizontal?

a ray of light is incident on a plane miror at an angle of 30^(@) in anti-clockwise direction. Find the angle and sense of rotation of the reflected ray.

When a ray of light falls normally on a plane mirror. The angle of incidence will be

When a ray of light strikes a plane mirror along the normal, the angle of incidence is :