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UPSEE Solved Model Paper 1
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© examsnet.com
Question : 19
Total: 150
A monoatomic ideal gas is taken through a cycle ABCA as shown. The efficiency of the cycle is
7%
10%
8.7%
15%
Validate
Solution:
Work done = Area =
1
2
× P × 2V = PV
Q
A
B
=
n
C
v
Δ
T
=
C
v
R
V
(
2
P
−
P
)
=
3
P
V
2
Q
B
C
=
n
C
p
Δ
T
=
c
R
R
2
P
(
3
V
−
V
)
= 10 PV
η =
W
Q
=
2
P
V
23
P
V
× 100 = 8.7%
© examsnet.com
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