a convex lens of focal length 15 cm and its refraction is 1.5 .it is sinked in a liquid whose refraction is 1.3 then what will be the focal length after sinking??
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The answer is 17.8 becuse a convex lens its long and the liquid shink each 1.5 and when its finsih is 17.8
vishal9249:
thanks body but not satisfied with your answer
ok
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