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If the focal length of the lens is 20 cm...

If the focal length of the lens is 20 cm, find the distance of the image from the lens in the following figure?

A

5.5 cm

B

7.5 cm

C

`12.0` cm

D

`20.0` cm

Text Solution

Verified by Experts

The correct Answer is:
B
`u=+12cm.f=+20cm`
use `1/v-1/u=1/f` to calculate v = +7.5 cm
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