Free physics question bank
Thermodynamics questions with solutions
Practice Thermodynamics for JEE Main, JEE Advanced, NEET, and Classes 11–12. Attempt each question, then open it for the full solution.
Showing 1–10 of 438 questions
- MCQmediumThermodynamics
On a linear temperature scale X, water freezes at -15°X and boils at 65°X. The Fahrenheit temperature corresponding to -95°X is:
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JEE Mains11 April 2023Shift 1Morning Shift
Open question & full solution → - MCQmediumThermodynamics
In a cyclic process shown on the P - V diagram the magnitude of the work done is :
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JEE MainsNEET
Open question & full solution → - MCQeasyThermodynamics
An air bubble of volume 2.9 cm³ rises from the bottom of a swimming pool of 5 m deep. At the bottom of the pool water temperature is 17 °C. The volume of the bubble when it reaches the surface, where the water temperature is 27 °C, is____ cm³.
(g = 10 m/s², density of water = 10³ kg/m³, and 1 atm pressure is 10⁵ Pa)
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JEE Mains 202623 January Evening Shift
Open question & full solution → - MCQmediumThermodynamics
Suppose that two heat engines are connected in series, such that the heat exhaust of the first engine is used as the heat input of the second engine as shown in figure. The efficiencies of the engines are η₁ and η₂, respectively. The net efficiency of the combination is given by
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JEE Advanced
Open question & full solution → - NumericdifficultThermodynamics
Two identical black-body plates P and Q are at temperatures Tₚ and Tq, with Tq < Tₚ. The net radiative power per unit area from P to Q is W₀. Two identical intermediate plates are then inserted between P and Q, and heat transfer occurs only between adjacent plates. In steady state the power per unit area is Wₛ. Find W₀/Wₛ.
JEE Advanced 2025 Paper 1
Open question & full solution → - MCQmediumThermodynamics
Identify the characteristics of an adiabatic process in a monatomic gas. (A) Internal energy is constant. (B) Work done in the process is equal to the change in internal energy. (C) The product of temperature and volume is constant. (D) The product of pressure and volume is constant. (E) The work done to change the temperature from T₁ to T₂ is proportional to (T₂ - T₁). Choose the correct answer.
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JEE Mains 2025 2 April Evening Shift
Open question & full solution → - MCQmediumThermodynamics
The rod connecting two reservoir and connected to a source is as shown in diagram. The rod is in steady state. Find the temperature of source, so that rate of melting of ice is 16 times that rate of vaporization. (Latent heat of vaporization is 540 Cal/gm and latent heat of fusion is 80 Cal/gm)
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JEE MainsNEET
Open question & full solution → - ParagraphmediumThermodynamics
One mole of a monoatomic ideal gas occupies two chambers separated by a movable adiabatic piston. Initially equal amounts of gas fill both chambers at (P₀,V₀,T₀). Heat is supplied to the left chamber, expanding it and compressing the right chamber until the pressure becomes 32P₀.
Sub-question 1
The final volume of left chamber is :
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Sub-question 2
The work done on the gas in the right chamber is :
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Sub-question 3
The change in internal energy of the gas in the left chamber is :
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JEE Advanced
Open question & full solution → - NumericeasyThermodynamics
A thermodynamic system is taken through the cyclic process ABC as shown in the figure. The total work done by the system during the cycle ABC is ______ J.
JEE Mains 202628 January Evening Shift
Open question & full solution → - Multi-correctmediumThermodynamics
In a mixture of nitrogen and helium kept at room temperature. As compared to a helium molecule nitrogen molecule hits the wall
Select all that apply
JEE Advanced
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