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Alens is placed between a source of ligh...

Alens is placed between a source of light and a wall. It forms images of are `A_(1)` and `A_(2)` on the wall, for its two different positions, the area of the source of light is

A

`(A_(1)-A_(2))/2`

B

`1/A_(1)+1/A_(2)`

C

`sqrt(A_(1)A_(2))`

D

`(A_(1)+A_(2))/2`

Text Solution

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The correct Answer is:
C
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AAKASH INSTITUTE ENGLISH-RAY OPTICS AND OPTICAL INSTRUMENTS-ASSIGNMENT (SECTION - C)
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