An image formed by a lens is erect. Such an image could be formed by

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Convex lens provided the image is smaller than object

Concave lens provided the image is smaller than object

Concave lens provided the image is larger than object

Concave lens provided the image is of the same size

answer is B.

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Detailed Solution

An image formed by a lens is erect. Such an image could be formed by a concave lens provided the image is smaller than the object.
An erect image is that which appears to stand upright. An erect image is formed when the rays from the object meet again after passing through the optical device. A concave lens always forms an erect and virtual image irrespective of the object's position. Thus, an erect image is formed by the concave lens, provided the image is smaller than the object.

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