Question

convex lense of focal 15cm in air is imust in warter find focal length in water, refractive index of glass 3/2 and water 4/3.​

Answer 1

A convex lens has 15 cm focal length in air. What is its focal length in water? (refractive index of air water = 1.33, refractive index of air glass = 1.5)

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Answer 2

A convex lens has 15 cm focal length in air. What is its focal length in water? (refractive index of air water = 1.33, refractive index of air glass = 1.5)

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