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Physics
Physics
Problem
A lens made of glass of refractive index
3
2
\frac{3}{2}
2
3
has focal length
f
f
f
. Find its focal length when it is immersed in water
(
μ
=
4
3
)
\left(\mu = \frac{4}{3}\right)
(
μ
=
3
4
)
.
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