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An object is moving towards a converging...

An object is moving towards a converging lens on its axis. The image is also found to be moving towards the lens. Then, the object distance u must satisfy

A

`2f lt u lt 4f`

B

`f lt u lt 2f`

C

`u gt 4f`

D

`u lt f`

Text Solution

Verified by Experts

The correct Answer is:
D

When object moves towards F to O virtual erect
and magnified image moves from `oo` to `O`.
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