# Q. Formation of real image using a biconvex lens is shown below :

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Solution:

## $From \, \, \cfrac{1}{f} \, = \, (\mu_{rel} \, - \, 1)\bigg(\cfrac{1}{R_1}-\cfrac{1}{R_2}\bigg)$ Focal length of lens will change hence image disappears from the screen

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