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If I(1) and I(2) be the size of the imag...

If `I_(1)` and `I_(2)` be the size of the images respectively for the two positions of lens in the displacement method, then the size of the object is given by

A

`Sqrt X l_1 l_2`

B

`Sqrt X l_1 l_2 /2 `

C

`l_1 + l_2 /2`

D

`l_1 - l_2`

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The correct Answer is:
A
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