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Physics
One mole of a gas at NTP is suddenly allowed to expand to three times its volume. If Cv= 2R, then the final pressure of the gas will be nearest to
Q. One mole of a gas at NTP is suddenly allowed to expand to three times its volume. If
C
v
= 2R, then the final pressure of the gas will be nearest to
1641
260
Thermodynamics
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A
0.1 atm
11%
B
0.2 atm
44%
C
0.4 atm
19%
D
0.6 atm
25%
Solution:
p
1
V
1
γ
=
p
2
V
2
γ
.
Here
C
p
=
3
R
an
d
γ
=
C
p
/
C
v
=
2
3