If the plane mirror is rotated through an angle of `5^@` keeping the direction of incident ray as it is, what is the angle through which the reflected ray turns?

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

A ray of light is incident on a medium at polarising angle .What is the angle betweeen the relfected and refracted rays?

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

A ray of light is inclined to one face of the prism at an angle of 50^@ .If the angle of the prism is 60^@ and the ray is deviated through an angle of 42^@ ,lfind the angle which the emergent ray makes with the second face of the prism.

What is the angle of incidence of a ray if the reflected ray is at an angle of 90^@ to the incident ray ?

What is the angle of reflection when a ray of light is incident normally to the mirror?

What is the angle of incidence when incident ray falls normal to the mirror?

Two plane mirrors l and m are placed perpendicular to each other as shown in the figure. An incident ray AB to the first mirror is reflected in the directin of BC and then reflected by the second mirror in the direction CD. Prove that AB||CD

What is the deviation produced by a thin lens of a ray passing through the optical centre?

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^@ ?