A parabola mirror is kept along `y^2=4x` and two light rays parallel to its axis are reflected along one straight line. If one of the incident light rays is at 3 units distance from the axis, then find the distance of the other incident ray from the axis.

Find the distance CQ if incident light ray parallel to principal axis is incident at an angle i. Also, find the distance CQ if irarr0 .

Figures shows a plane mirror on which a light ray is incident, if the incident light ray is turned by 10^(@) and the mirror by 20^(@) as shown , find the angle turned by the reflected ray.

A light ray does not bend at the boundary in passing from one medium to the other medium if the angle of incidence is :

Find the equation of the straight lines which are : parallel to the y-axis and at a distance of 4 units from it towards negative side of x-axis.

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)

Draw a diagram showing the reflection of a light ray from a plane mirror. Label on it the incident ray, the reflected ray, the normal, the angle of incidence i and the angle of reflection r.

A parallel beam of light is incident on a converging lens parallel to its principal axis. As one moves away from the les on the other side on its principal axis, the intensity of light

A light ray is travelling from air to glass. True reflected and refracted rays are perpendicular to each other. If the angle of incidence in air is I the refractive index of glass is

When a light ray is reflected from a wall, the angle of incidence is not equal to the angle of reflection.

A ray of light along x+sqrt(3)y=sqrt(3) gets reflected upon reaching x-axis, the equation of the reflected ray is