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Byju's Answer
Standard XII
Physics
Combinations of Lenses & Mirrors
if refractive...
Question
if refractive index from air to glass is 3/2 and from air to water is 4/3 , find the ratio of focal length of a glass lens in water and in air.
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Solution
Dear student,
Given that,
μ
w
=
4
3
,
μ
g
=
3
2
B
y
l
e
n
s
m
a
k
e
r
f
o
r
m
u
l
a
,
w
e
k
n
o
w
t
h
a
t
,
1
F
a
i
r
∝
μ
g
-
1
1
F
w
a
t
e
r
∝
μ
g
μ
w
-
1
⇒
F
w
a
t
e
r
F
a
i
r
=
μ
w
μ
g
-
1
μ
g
-
μ
w
=
4
3
3
2
-
1
3
2
-
4
3
=
4
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Similar questions
Q.
Refractive index of water with respect to air is 4/3 and glass is 3/2.Find refractive index of glass with respect to water.
Q.
Find the refractive index of glass with respect to water. The refractive indices of glass and air with respect to air are
3
/
2
and
4
/
3
respectively.
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