Question

prove that focal length of the a lens change with medium
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Answer 1

Answer:

I/f = (u2/u1 -1) (1/R1 - 1/R2)

u2 - refractory index of Lens

u1 - refractory index of Medium

Convex lens

Converging when it is placed in medium which refractory index is lower than lens

When

u1>u2.

it behave like diverging lens

Same as Concave lens.

Thanks for Reading

Answer 2

Answer:

we have same camera enjoy