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When the object is at distance u1 and u2...

When the object is at distance `u_1 and u_2` from the optical centre of a convex lens, a real and a virtual image of the same magnification are obtained. The focal length of the lens is

A

`(u_(1)+u_(2))`

B

`u_(1)+(u_(2))/(2)`

C

`(u_(1)+u_(2))/(2)`

D

`(u_(1)-u_(2))/(2)`

Text Solution

Verified by Experts

Use `m_(1)=m_(2)`
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