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A lens of focal length 12 cm forms an up...

A lens of focal length `12 cm` forms an upright image three times the size of a real object. Find the distance in cm between the object and image.

Text Solution

Verified by Experts

The correct Answer is:
A, C
Virtual, magnified and erect image is formed by
convex lens.
Let `u=-x`
Then, `v=-3x`
Now, `1/(-3x)-1/-x=1/(+12)`
`:. X=8 cm`
Distance between object and image
`=3x-x=2x=16 cm`
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