A wall reflects light and a mirror also reflects light. What difference is there in the way they reflect light?

State two factors on which the lateral displacement of the emergent ray depends.

To construct ray diagram we use two light rays which are so chosen that it is easy to know their directions after reflection from the mirror. List these two rays and state the path of these rays after reflection. Use these rays to locate the image of an object placed between centres of curvature and focus of a concave mirror.

Draw ray diagrams showing the image formation by a convex lens when an object is placed:
At infinity.

An object is placed well outside the principal focus of a convex lens. Draw a ray diagram to show how.

Describe with the help of a diagram, the nature, size and position of the image formed when an object is placed beyond the centre of curvature of a concave mirror.

Where must the object be placed for the image formed by a converging lens to be:

1. Real, inverted and smaller than the object?
2. Real, inverted and same size as the object?
3. Real, inverted and larger than the object?
4. Virtual, upright and larger than the object?

State one practical application the use of such a lens with the object in position (i) and (ii).

Draw a ray diagram to show the formation of a real diminished image of an object by a convex lens. In your diagram, the position of object and image with respect to the principal focus should be shown clearly.

Draw ray diagrams showing the image formation by a convex lens when an object is placed:Between focus and twice the focal length of the lens.