A mirror and source of light are situated at the origin O and a point on OX respectively. A ray of light from the source strikes the mirror and is reflected. If the DRs of the normal to the plane of mirror are `1,-1,1,` then DCs for the reflacted ray are :

If a ray of lights strikes a mirror perpendicularly what will be the value of reflected angle?

A point source of light is placed at the centre of curvature of a concave mirror. The angle of deviation of the rays incident on the mirror from this source and reflected from it, is

Two plane mirrors are inclined to each other at an angle theta .A ray of light is reflected first at one mirror and then at the other . The total deviation of the ray is

A ray of light comming from (1, 2) to the x axis at A and reflecting with the point (5, 3). Find the co-ordinate of A.

A ray of light coming from the point (1,2) is reflected at a point A on the x-axis and then passes through the point (5,3). The coordinates of the point A are

The focal length of a concave mirror is 30 cm. An object is placed at a distance of 45 cm in front of the mirror. A plane mirror is placed perpendicularly on the principal axis of the concave mirror in such a way that the object is situated in between the two mirrors. Light rays from the object at first are reflection from the concave mirror and then from the plane mirror. As a result the final image coincides with the object. What is the distance between the two mirros?

A point source of light is placed at the midpoint of two concave mirror (facing each other) of focal length f , What should be the magnitude of the distance of separation d between the two mirrors for a single image to be formed?

A ray of light passing through the point (1,2) is reflected on the x-axis at a point P and passes through the point (5,3) , then the abscissa of the point P is-