Draw a neat labelled ray diagram to show total internal reflection of a ray of light incident normally on one face of a `30^(@),90^(@),60^(@)` prism.

Draw a diagram to show the reflection of a light ray incident normally on a plane mirror.

Draw a labelled ray diagram to illustrate (a) critical angle (b) total internal reflection for a ray of light moving from one medium to another.

Draw a ray diagram to illustrate how a ray of light incident obliquely on one face of a rectangular glass slab of uniform thickness emerges.

Complete the following diagrams in Fig. by drawing the reflected ray for the incident rays A and B.

Draw a neat and labelled diagram, when a ray of white light passes through an equilateral prism.

Draw the incident ray and the reflected ray. if a light ray is incident on a plane mirror with the angle of incidence 30^@ .

Draw a diagram to show the reflection of a ray of light by a plane mirror. In the diagram, label the incident ray, the reflected ray, the normal, the angle of incidence and the angle of reflection.

A ray of light falls normally on one face of a right angled prims of refracting angle A. It suffers two total internal reflections before coming out of prism parallel to incident ray as shown. Refractive index to prism material will be:

The path of a ray of light passing through an equilateral glass prism ABC is shown in figure. The ray of light is incident on face BC at the critical angle for just total internal reflection. The total internal reflection. The total angle of deviation after the refraction at face AC is 108^@ . Calculate the refractive index of the glass.

(a) Deduce the expression, by drawing a suitable ray diagram, for the refractive index of a triangular glass prisms in terms of the angle of minimum deviation (D) and the angle of prism (A). Draw a plot showing the variation of the angle of deviation with the angle of incidence. (b) Calculate the value of the angle of incidence when a ray of light incident on one face of an equilateral glass prism produces the emergent ray, which just grazes along the adjacent face. Refractive index of prism is sqrt2