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Lens Formula and Magnification

An image I is...

Question

An image $I$ is formed of a point object $O$ by a lens whose principal axis is $A B$ as shown in figure. The lens used is :

A

Plane concave lens

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B

Concave lens

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C

Convex lens

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D

Concave meniscus

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Solution

The correct option is C Convex lens

The image formed is on the other side of the optical axis and also, it is real and inverted.
This is possible only with the help of a convex lens.

So, lens used here is a convex lens.

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