For which of the following images of an object placed at infinity will be highly diminished and point sized?

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Convex mirrors only

Concave mirrors only

Convex lens only

Concave mirror, convex mirror, concave lens and convex lens

answer is D.

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Detailed Solution

When the object is placed at infinity, then the image formed will be highly diminished and point size in case of a concave mirror, convex mirror, convex lens and concave lens.
In the case of a concave mirror, when the object is placed at infinity, the image formed is highly diminished. At the same time, when the object is placed at infinity to the convex mirror, the image formed is virtual, erect and point-sized.In the case of a concave lens, when the object is placed at infinity, the image formed is virtual erect and highly diminished. At the same time, when the image is placed at infinity with the concave lens, then the image formed is of the same size.

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