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Byju's Answer
Standard XIII
Physics
Heat Capacity
Specific heat...
Question
Specific heat capacity at constant volume of one mole diatomic ideal gas is
A
2
R
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B
1.5
R
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C
R
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D
2.5
R
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Solution
The correct option is
D
2.5
R
Given,
n
=
1
f
=
5
(Diatomic Gas)
We know internal energy
(
U
)
-
U
=
n
f
R
T
2
Now,
C
v
=
∂
U
∂
T
=
n
f
R
2
⇒
C
v
=
1
×
5
×
R
2
⇒
C
v
=
2.5
R
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