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JEE Main Physics Class 11 Thermodynamics Part 2 Questions
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Question : 21
Total: 82
A gas is compressed adiabatically, which one of the following statement is NOT true.
[10-Apr-2023 shift 2]
There is no change in the internal energy
The temperature of the gas increases.
The change in the internal energy is equal to the work done on the gas
There is no heat supplied to the system
Validate
Solution:
In Adiabatic process,
∆
Q
=
0
If gas is compressed, then w (by gas)
≠
0
Therefore by
1
st
law
∆
Q
=
∆
u
+
w
0
=
∆
u
+
w
∆
u
=
−
w
≠
0
It implies in adiabatic compression, internal energy of gas changes.
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