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(Solved): A convex lens of refractive index
15
15 and focal length
18
18cm in air is immersed in ...
A convex lens of refractive index
15
15 and focal length
18
????
????
18cm in air is immersed in water. The change in focal length of the lens will be_______ cm (Given refractive index of water =
4
3
3
4
?
)