Heat, Work & First Law of Thermodynamics
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
Show answer and solution
Answer: (b)
- Statement I: false. Heat can be added without a rise in temperature, e.g. during melting/boiling or isothermal expansion.
- Statement II: true. Work by the system needs since .
- So the answer is (b).