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Types of spherical lenses

An object is ...

Question

An object is placed in front of a convex lens such that the image formed has the same size as that of the object. The object is placed at:

A

Optical Centre

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B

Centre of Curvature

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C

F

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D

2F

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Solution

The correct option is D
2F

The required ray diagram is shown below in which AB is the object and A'B' is its image.

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