When gases in a system are compressed during an adiabatic process, the temperature of the system increases. Hence, option (C) is correct.
The given problem is based on the concept and fundamentals of adiabatic process. The thermodynamic process where there is no heat interaction between the system and the surrounding, is known as adiabatic process.
As mentioned above, in adiabatic process the heat transferred to the system must be zero . So by first law of thermodynamics we know that,
Q = ΔU - W
So, for adiabatic process,
Q = 0
Then,
0 = ΔU - W
W = ΔU
As we know that the gas is compressed so the work is done on the gas which shows W is positive . So here change in internal energy must be positive which shows that temperature must be increased .
Thus, we can conclude that when gases in a system are compressed during an adiabatic process, the temperature of the system increases. Hence, option (C) is correct.
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