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Byju's Answer
Standard XI
Physics
Introduction
Surface tensi...
Question
Surface tension of liquid is
70
dyne/cm
. Its value in
SI
is
A
70
N/m
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B
7
×
10
−
2
N/m
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C
7
×
10
2
N/m
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D
7
×
10
−
3
N/m
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Solution
The correct option is
B
7
×
10
−
2
N/m
As we know that
1
N
=
10
5
dyne
and
1
m
=
100
cm
Putting the values we have surface tension in
SI
as
70
×
10
−
5
N
10
−
2
m
=
7
×
10
−
2
N/m
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1
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