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

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

A.            Concave mirror only

B.            Convex mirror only

C.            Convex lens only

D.            Concave mirror, convex mirror, concave lens and convex lens

Answer: Concave mirror, convex mirror, concave lens and convex lens