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If I1 & I2 be the sizes of real images ...

If `I_1` & `I_2` be the sizes of real images for two positions of a convex lens between object and screen, then the size of the object is

A

`I_1//I_2`

B

`I_1I_2`

C

`sqrt(I_1I_2)`

D

`sqrt(I_1//I_2)`

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