In order to obtain a real image of magnification 2 using a converging lens of focal length 20 cm , where should an object be pla

In order to obtain a real image of magnification 2 using a converging lens of focal length 20 cm , where should an object be placed
A. `50 cm`
B. `30 cm`
C. `-50 cm`
D. `-30 cm`

In order to obtain a real image of magnification 2 using a converging lens of focal length 20 cm , where should an object be placed

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