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When the object is at distance mu1 and m...

When the object is at distance `mu_1 and mu_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)/2`

B

`u_1+u_2`

C

`sqrt(u_1u_2)`

D

`(u_1+u_2)/2`

Text Solution

Verified by Experts

The correct Answer is:
D
See the hint of Q. No.`5` the same section. In that
example,
`f=(16+16)/2=11 cm`
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