Science, asked by Anonymous, 6 hours ago

If the the focal length of convex lens in convex lens in air is 40cm when it is immersing in water then the focal length will be(a)20 cm (b)160 cm (c) 80cm (d) 40cm ​

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Answered by tejvirsingh6942
0

the right answer is 20 bro make me a brainliest

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