Concepts Of Physics MCQ Edition [Volume 2]
- Exam
- Concepts Of Physics MCQ Edition [Volume 2]
- Subject
- Physics
- Chapter
- Laws of Thermodynamics
Concepts Of Physics MCQ Edition [Volume 2] · Physics · Laws of Thermodynamics
Determine the heat absorbed by a system undergoing the cyclic...
Determine the heat absorbed by a system undergoing the cyclic process depicted in the figure.


Options
- A
- B
- C
- D
Correct answer
C.
Step-by-step solution
For a cyclic process, the change in internal energy is zero ().
According to the first law of thermodynamics, the heat absorbed is equal to the work done:
The magnitude of work done in a cyclic process is given by the area enclosed by the cycle on the indicator diagram.
From the given graph, the semi-axes of the closed curve are:
The area of the cycle is:
Using , we get:
Therefore, the magnitude of heat absorbed is .
According to the first law of thermodynamics, the heat absorbed is equal to the work done:
The magnitude of work done in a cyclic process is given by the area enclosed by the cycle on the indicator diagram.
From the given graph, the semi-axes of the closed curve are:
The area of the cycle is:
Using , we get:
Therefore, the magnitude of heat absorbed is .