Thermodynamics

JEE Advanced · Physics · 40 past questions

1. Q1 2026 Paper 2

   Ten moles of an ideal monoatomic gas, initially in state $a$ at atmospheric pressure and temperature… (with a figure)

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2. Q2 2025 Paper 2

   The efficiency of a Carnot engine operating with a hot reservoir kept at a temperature of 1000 K is 0.4. It…

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3. Q3 2023 Paper 1

   One mole of an ideal gas expands adiabatically from an initial state $(T_A, V_0)$ to final state…

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4. Q4 2023 Paper 1

   A closed container contains a homogeneous mixture of two moles of an ideal monatomic gas ($\gamma = 5/3$) and…

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5. Q5 2023 Paper 2

   One mole of an ideal gas undergoes two different cyclic processes I and II, as shown in the $P$-$V$ diagrams… (with a figure)

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6. Q6 2022 Paper 1

   An ideal gas of density $\rho = 0.2\ kg\ m^{-3}$ enters a chimney of height $h$ at the rate of… (with a figure)

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7. Q7 2022 Paper 1

   List I describes thermodynamic processes in four different systems. List II gives the magnitudes (either…

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8. Q8 2021 Paper 1

   An ideal gas undergoes a four step cycle as shown in the $P-V$ diagram below. During this cycle, heat is… (with a figure)

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9. Q9 2021 Paper 2

   A thermally insulating cylinder has a thermally insulating and frictionless movable partition in the middle… (with a figure)

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10. Q10 2021 Paper 2

    A thermally insulating cylinder has a thermally insulating and frictionless movable partition in the middle… (with a figure)

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11. Q11 2020 Paper 1

    Consider one mole of helium gas enclosed in a container at initial pressure $P_1$ and volume $V_1$. It…

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12. Q12 2020 Paper 2

    A spherical bubble inside water has radius $R$. Take the pressure inside the bubble and the water pressure to…

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13. Q13 2019 Paper 1

    A current carrying wire heats a metal rod. The wire provides a constant power ($P$) to the rod. The metal rod…

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14. Q14 2019 Paper 1

    One mole of a monatomic ideal gas goes through a thermodynamic cycle, as shown in the volume versus… (with a figure)

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15. Q15 2019 Paper 2

    A mixture of ideal gas containing 5 moles of monatomic gas and 1 mole of rigid diatomic gas is initially at…

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16. Q16 2019 Paper 2

    Answer Q.17 and Q.18 by appropriately matching the lists based on the information given in the paragraph… (with a figure)

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17. Q17 2019 Paper 2

    Answer Q.17 and Q.18 by appropriately matching the lists based on the information given in the paragraph… (with a figure)

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18. Q18 2018 Paper 1

    One mole of a monatomic ideal gas undergoes a cyclic process as shown in the figure (where $V$ is the volume… (with a figure)

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19. Q19 2018 Paper 2

    One mole of a monatomic ideal gas undergoes an adiabatic expansion in which its volume becomes eight times…

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20. Q20 2018 Paper 2

    One mole of a monatomic ideal gas undergoes four thermodynamic processes as shown schematically in the… (with a figure)

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21. Q21 2017 Paper 1

    Answer Q.16, Q.17 and Q.18 by appropriately matching the information given in the three columns of the… (with a figure)

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22. Q22 2017 Paper 1

    Answer Q.16, Q.17 and Q.18 by appropriately matching the information given in the three columns of the… (with a figure)

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23. Q23 2017 Paper 1

    Answer Q.16, Q.17 and Q.18 by appropriately matching the information given in the three columns of the… (with a figure)

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24. Q24 2016 Paper 2

    A gas is enclosed in a cylinder with a movable frictionless piston. Its initial thermodynamic state at…

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25. Q25 2015 Paper 2

    An ideal monoatomic gas is confined in a horizontal cylinder by a spring loaded piston (as shown in the… (with a figure)

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26. Q26 2014 Paper 1

    A thermodynamic system is taken from an initial state $i$ with internal energy $U_i = 100\,J$ to the final… (with a figure)

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27. Q27 2014 Paper 2

    In the figure a container is shown to have a movable (without friction) piston on top. The container and the… (with a figure)

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28. Q28 2014 Paper 2

    In the figure a container is shown to have a movable (without friction) piston on top. The container and the… (with a figure)

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29. Q29 2013 Paper 2

    One mole of a monatomic ideal gas is taken along two cyclic processes E→F→G→E and E→F→H→E as shown in the PV… (with a figure)

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30. Q30 2012 Paper 2

    Two moles of ideal helium gas are in a rubber balloon at $30^\circ$C. The balloon is fully expandable and can…

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31. Q31 2011 Paper 1

    5.6 liter of helium gas at STP is adiabatically compressed to 0.7 liter. Taking the initial temperature to be…

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32. Q32 2011 Paper 2

    One mole of a monatomic ideal gas is taken through a cycle ABCDA as shown in the P-V diagram. Column II gives… (with a figure)

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33. Q33 2010 Paper 1

    One mole of an ideal gas in initial state A undergoes a cyclic process ABCA, as shown in the figure. Its… (with a figure)

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34. Q34 2010 Paper 2

    A diatomic ideal gas is compressed adiabatically to $\frac{1}{32}$ of its initial volume. If the initial…

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35. Q35 2008 Paper 1

    Paragraph for Question Nos. 38 to 40… (with a figure)

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36. Q36 2008 Paper 1

    Paragraph for Question Nos. 38 to 40… (with a figure)

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37. Q37 2008 Paper 1

    Paragraph for Question Nos. 38 to 40… (with a figure)

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38. Q38 2008 Paper 2

    Column I contains a list of processes involving expansion of an ideal gas. Match this with Column II… (with a figure)

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39. Q39 2007 Paper 1

    The piston is now pulled out slowly and held at a distance $2L$ from the top. The pressure in the cylinder…

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40. Q40 2007 Paper 1

    While the piston is at a distance 2L from the top, the hole at the top is sealed. The piston is then…

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