Question

A lens made of glass of refractive index 3/2 has a focal length 20cm in air.calculate the focal length of the lens,when it is immersed in water(n=4/3)

Answer 1

https://m.meritnation.com/ask-answer/question/a-convex-lens-made-of-glass-of-refractive-index-1-5-is-dippe/ray-optics-and-optical-instruments/7989721
A convex lens made of glass of refractive index 1 . 5 is dipped in ...

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