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Byju's Answer
Standard XII
Physics
Young's Modulus of Elasticity
When the tens...
Question
When the tension in a metal wire is
T
1
, its length is
l
t
. When the tension is
T
2
, its length is
l
2
. The natural length of wire is
A
T
2
T
1
(
l
1
+
l
2
)
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B
T
1
l
1
+
i
2
l
2
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C
l
1
T
2
−
l
2
T
1
T
2
−
T
1
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D
l
1
T
2
−
l
2
T
1
T
2
+
T
1
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Solution
The correct option is
C
l
1
T
2
−
l
2
T
1
T
2
−
T
1
When tension
T
1
then length
=
l
1
When tension
T
2
then length
=
l
2
△
l
=
F
l
A
Υ
=
△
l
1
△
l
2
=
F
1
F
2
=
T
1
T
2
l
1
−
l
l
2
−
l
=
T
1
T
2
⇒
l
1
T
2
−
l
.
T
2
=
l
2
T
1
−
l
T
1
Natural length of wire l is
l
=
l
2
T
1
−
l
1
T
2
T
2
−
T
1
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0
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