Physics, asked by nunumanjeri4133, 1 year ago

Focal length of a convex lens in air is 20 cm find its focal length when immersed in water given mg is equal to 3 by 2

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Answered by maxgogoi52

0

আধা হব লাগে মোৰ মতে, ছাৰক সুধি লবি

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