Thermodynamics — Practice Quiz
Maharashtra Board · Class 12 · Physics
Try a 4-question quiz on Thermodynamics for Maharashtra Board Class 12 Physics: tap an answer to check it and see why.
Interactive on Super Tutor
Studying Thermodynamics? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for practice quiz and more.
Free trial, no card needed.
Quick Quiz: Thermodynamics
0/4Tap an answer to check it instantly. No sign-up needed for these 4.
What is the change in internal energy of an ideal gas during an isothermal process?
A gas expands from 2 L to 6 L at constant pressure of 2 atm. Calculate the work done by the gas. (1 atm = 101,325 Pa)
The efficiency of a Carnot engine operating between 400 K and 300 K is:
In which thermodynamic process does the system do no work?
Sample Questions
Which of the following are characteristics of an adiabatic process? (Select all correct)
Show answer
No heat exchange with surroundings, Q = 0, PVᵞ = constant, ΔU = -W
In adiabatic process: (1) System is thermally isolated, so Q = 0, (2) Equation of state is PVᵞ = constant, (3) From first law: ΔU = Q - W = 0 - W = -W, (4) Temperature changes during adiabatic process.
Which statements about the first law of thermodynamics are correct? (Select all correct)
Show answer
ΔU = Q - W, Energy cannot be created or destroyed, Heat and work are equivalent forms of energy, Q = ΔU + W
First law states: ΔU = Q - W or Q = ΔU + W. It's a statement of energy conservation. Heat and work are interconvertible. However, complete conversion of heat to work is impossible (second law limitation).
A system absorbs 500 J of heat and does 300 J of work. What is the change in internal energy?
Show answer
200 J
Using first law: ΔU = Q - W. Given: Q = +500 J (heat absorbed), W = +300 J (work done by system). Therefore: ΔU = 500 - 300 = 200 J. Internal energy increases by 200 J.
The coefficient of performance of a refrigerator is defined as:
Show answer
Qc/W
Coefficient of Performance (CoP) = Qc/W, where Qc is heat extracted from cold reservoir and W is work input. It measures how much heat can be extracted per unit work input.
+41 more questions on Thermodynamics (Maharashtra Board Class 12 Physics)
Practise AllFrequently Asked Questions
What are the important topics in Thermodynamics for Maharashtra Board Class 12 Physics?
How many practice questions are there for Thermodynamics?
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Thermodynamics
For serious students
Get the full Thermodynamics chapter — start free.
Quizzes, flashcards, an AI doubt solver and a study plan for Maharashtra Board Class 12 Physics. Free to start, no card needed.