Use the mirror equation to deduce that: an object placed between f and 2f of a concave mirror produces a real image beyond 2f.

Use the mirror equation to deduce that: an object placed between the pole and focus of a concave mirror produces a virtual and enlarged image.

You have learnt in the text how Huygens of reflection and refraction. Use the same principle to deduce directly that a point object placed in front of a plane mirror produces a virtual image whose istance from the mirror is equal to the object distance from the mirror.

Use the mirror equation to deduce that: a convex mirror always produces a virtual image independent of the location of the object.

Use the mirror equation to deduce that: the virtual image produced by a convex mirror is always diminished in size and is located between the focus and the pole.

When an object is placed beyond centre of curvature of a concave mirror, the image is formed:

Find the position of an object,which when placed in front of a concave mirror of focal length 20 cm,produces a virtual image,which is twice the size of the object.