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Problem
Focal length of a convex lens in air is 10 cm. Find its focal length in water. Given that
μ
g
=
3
/
2
\mu_g = 3/2
μ
g
=
3/2
and
μ
w
=
4
/
3
\mu_w = 4/3
μ
w
=
4/3
.
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