- Exam
- NEET
- Subject
- Physics
- Chapter
- Thermodynamics
NEET · Physics · Thermodynamics
Given below are two statements: Statement I: If heat is added to a...
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
Options
- AStatement I is true but Statement II is false
- BBoth Statement I and Statement II are false
- CBoth Statement I and Statement II are true
- DStatement I is false but Statement II is true
Correct answer
D. Statement I is false but Statement II is true
Step-by-step solution
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
From the above equation, it can be concluded that if , i.e., work is done by the system, its volume must increase. Hence, statement II is true.