Given below are two statements: Statement I: If heat is added to a system, its temperature must increase. Statement II: If positive work is done by a system in a thermodynamic process, its volume must

Question

Given below are two statements: Statement I: If heat is added to a system, its temperature must increase. Statement II: If positive work is done by a system in a thermodynamic process, its volume must increase. In the light of the above statements, choose the correct answer from the options given below

TestHub · Accepted Answer

If heat energy is added to a thermodynamic system, one part increases the internal energy and the other part performs some work.
If heat is added to a system, the system can do work without changing its internal energy. Hence, statement 1 is false.
The formula to calculate the work done is given by
$W = \int P d V$
From the above equation, it can be concluded that if $W > 0$ , i.e., work is done by the system, its volume must increase. Hence, statement II is true.

Physics - Heat & Thermo Question with Solution | TestHub

Options:

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