Two rays are incident on a spherical mirror of radius R = 5 cm parallel to its optical axis at distances `h_1 = 0.5 cm` and `h_2 = 3 cm` Determine the distance `Deltax` between the points at which these rays intersect the optical axis after being reflected at the mirror.

A converging beam of light rays in incident on a concave spherical mirror whose radius of curvature is 0.8m . Determine the position of the point on the optical axis of the mirror where the reflected rays intersect, if the extensions of the incident rays intersect the optical axis 40cm form the mirror's pole.

Converging rays are incident ono a convex spherical mirror so that their extensions intersect 30cm behind the mirror on the optical axis. The reflected rays form a diverging beam so that their extensions intersect the optical axis 1.2 m from the mirror. Determine the focal length of the mirror.

Find distance on focal plane where parallel and paraxial rays which are not parallel to optic axis, meet after reflection.

A parallel beam of rays is incident on a consisting pf three thin lenses with a common optical axis. The focal length of the lenses are equal to f_1=+10 cm and f_2=-20 cm, and f_3=+9 cm respectively. The distance between the first and the second lens is 15 cm and between the second and the third is 5 cm. Find the position of the point at which the beam converges when it leaves the system of lenses.

A converging lens and a diverging mirror are placed at a separation of 15 cm. The focal length of the lens is 25 cm and that of the mirror is 40 cm. Where should a point source be placed between the lens and the mirror so that the light, after getting reflected by the mirror and then getting transmitted by the lens, comes out parallel to the principal axis ?

There is a convex mirror of radius 50 cm. The image of a point at a distance 50 cm from the pole of mirror on its axis will be formed at :

Two rays travelling parallel to the principal axis strike a thick large plano-convex lens having a refracive index of 1.60 .If the spherical face has a radius of curvature of magnitude 20.0 cm and th two rays are h_(1)=0.500cm and h_(2)=12.0cm from the principal axis ,find the difference in the positions where they cross the principal axis .Assume that the ray incident at height h_(2) is incident at the periphery.

A ray of light is incident on a concave mirror . It is parallel to the principal axis and its height from principal axis is equal to the focal length of the mirror. The ratio of the distance of point B to the distance of the focus from the centre of curvature is (AB is the reflected ray)

Two plane mirrors X and Y are placed parallel to each other and are separated by a distance of 20 cm. An object is placed between the two mirrors at a distance 5 cm from the mirror X. Find the distance of the first three image formed in the mirror X.