Free physics question bank
thermodynmic process and work done 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 59 questions
- MCQmediumThermodynamics
A thermodynamic system is taken through the cyclic process shown in the P–V graph. The total work done is:
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15 April 2023 Morning Shift
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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
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Under isothermal conditions, pressure varies as P = aV⁻³. The bulk modulus is:
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JEE Mains13 April 2023Shift 1Morning Shift
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In the following p-V diagram the equation of state along the curved path is given by (V - 2)² = 4ap where a is a constant. The total work done in the closed path is
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JEE Mains 202628 January Morning Shift
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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
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A monoatomic ideal gas with γ = 5/3 is stored in a thermally insulated container and is suddenly compressed to 1/8 of its initial volume. The ratio Pf/Pi is:
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JEE Mains 2025 8 April Evening Shift (Shift 2)
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A piston of mass M is attached to a massless spring whose restoring force is F = -kx³. The piston separates a vertical chamber into two parts, and the lower part contains n moles of an ideal gas. The spring is initially at its natural length. The gas is heated isothermally at temperature T so that the piston rises from height L₀ to L₁. The total energy supplied by the heating filament is:
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JEE Mains 2025 3 April Morning Shift
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An ideal gas initially has pressure P₀ and volume V₀. It is suddenly compressed to volume V₀/4. If γ is the ratio of specific heats, the final pressure is:
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13 April 2023 Evening Shift
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A vessel contains 0.15 m³ of an ideal gas at pressure 8 bar. The gas has Cₚ = 3R and Cᵥ = 2R. It expands adiabatically until the pressure becomes 1 bar. Find the work done by the gas in kJ.
JEE Mains 2026 2 April Morning Shift
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In the circular thermodynamic cycle ABCA shown in the original question figure, the magnitude of work done by the gas in one cycle is:
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JEE Mains 2025 24 Jan Evening Shift
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