Fill ups
The height of an object placed in front of a plane miror is 5 cm. The height of the virtual image formed is…………..

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.

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.

Where should object be placed in front of a convex lens to get real image of the size of object?

Where should an object be placed in front of a convex lens to get a real image of the size of the object?

The image of an object placed at a point before a plane mirror LM is seen at the point B by an observer at D as shown in the given fig. Prove that the image is as far behind the mirror as the object is in front of the mirror.

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

A concave mirror has a focal length of 20 cm and an object is placed at a distance of 16 cm from it.Find the position of the image formed by it.

A concave mirror has a focal length of 10 cm and an object is placed at a distance of 16 cm from it.Find the psition of the image formed by it.

A concave mirror produces three times magnified real image of an object placed at a 10 cm in front of it. Find where will the image be formed?