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JEE Main Physics Class 11 Properties of Solids and Liquids Questions Part 3 Questions
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Question : 27
Total: 100
A spherical drop of liquid splits into 1000 identical spherical drops. If
u
i
is the surface energy of the original drop and
u
f
is the total surface energy of the resulting drops, the (ignoring evaporation).
u
f
u
i
=
(
10
x
)
. Then value of
x
is _______:
[25-Jan-2023 Shift 2]
Your Answer:
Validate
Solution:
Surface Tension
=
T
R
: Radius of bigger drop
r
: Radius of smaller drop
Volume will remain same
4
3
π
R
3
=
1000
×
4
3
π
r
3
R
=
10
r
u
i
=
T
⋅
4
π
R
2
u
f
=
T
⋅
4
π
r
2
×
1000
u
f
u
i
=
1000
r
2
R
2
u
f
u
i
=
10
1
© examsnet.com
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