A ray of light is going towards the focus of a convex lens. Draw a ray digram to show the path of this ray of light after refraction through the lens.

Draw a ray diagram to show the path of a ray of light passing obliquely from water to alcohol.

To construct a ray diagram, you need at least ______ whose path(s) after refraction through the lens are known.

In each case, given below re-draw the diagram and show the direction of the light ray after refraction from the lens:

A ray of light travelling in air incident on a rectangular glass block and emerges out into the air from the opposite face. Draw a labelled ray diagram to show the complete path of this ray of light. Mark the two points where the refractions of light takes place. What can you say about the final direction of ray of light?

A ray of light going towards the focus of a convex mirror becomes parallel to the principal axis afterreflection form the mirror. Draw a labelled diagram to represent this situation.

A ray of light is incident on a convex mirror as shown in Fig. Redraw the above diagram after completing the path of the light ray after reflection from the mirror.