In which of the following, the image of an object placed at infinity will be highly diminished and point sized ?

A concave mirror forms a point sized image for an object placed at

Where in front of a concave mirror image of an extended object placed at infinity will be formed by the mirror? Mention one feature of the image.

Describe with the help of a ray diagram the nature, size and position of the image formed when an object is placed at infinity (considerable distance) in front of a convex lens. State three characteristics of the image so formed.

Which of the following do not form diminished virtual image of a real object ?

Which of the following do not form diminished virtual image of a real object ?

The size of the image of an object placed at the focus of a concave mirror is ………….. .