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AP EAMCET Engineering 2011 Solved Paper
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© examsnet.com
Question : 23
Total: 160
During an adiabatic process, the pressure of a gas is proportional to the cube of its temperature. The value of
C
p
∕
C
V
for that gas is
7
5
4
5
5
3
3
2
Validate
Solution:
In adiabatic process
p
V
γ
=
k
......(i)
Given,
p
∝
T
3
or
p
=
k
T
3
=
k
(
p
V
R
)
3
=
(
k
R
3
)
p
3
V
3
or
p
=
(
k
R
3
)
p
3
V
3
⇒
p
2
V
3
=
k
⇒
p
V
3
/
2
=
k
.......(ii)
Comparing Eqs. (i) and (ii)
we get
γ
=
3
2
=
C
p
C
V
© examsnet.com
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