Isobaric and Isochoric Processes PYQs: JEE Mains Physics

Showing 1–9 of 9 questions

1. 1. A diatomic gas \((\gamma=1.4)\) does 100 J of work when it is expanded isobarically. Then the heat given to the gas _________ J. 2026 Easy
2. 2. An ideal gas goes from an initial state to final state. During the process, the pressure of gas increases linearly with temperature.
   A. The work done by gas during the process is zero.
   B. The heat added to gas is different from change in its internal energy.
   C. The volume of the gas is increased.
   D. The internal energy of the gas is increased.
   E. The process is isochoric (constant volume process)
   Choose the correct answer from the options given below: 2025 Easy
3. 3. The temperature of 1 mole of an ideal monoatomic gas is increased by \(50^{\circ} \mathrm{C}\) at constant pressure. The total heat added and change in internal energy are \(E_1\) and \(E_2\), respectively. If \(\frac{E_1}{E_2}=\frac{x}{9}\) then the value of \(x\) is _____ 2025 Hard
4. 4. \(0.08 \mathrm{~kg}\) air is heated at constant volume through \(5^{\circ} \mathrm{C}\). The specific heat of air at constant volume is \(0.17 \mathrm{kcal} / \mathrm{kg}^{\circ} \mathrm{C}\) and \(\mathrm{J}=4.18\) joule \(/ \mathrm{cal}\). The change in its internal energy is approximately. 2024 Hard
5. 5. The given figure represents two isobaric processes for the same mass of an ideal gas, then ....
   2024 Hard
6. 6. A bicycle tyre is filled with air having pressure of \(270\,kPa\) at \(27^{\circ}\,C\). The approximate pressure of the air in the tyre when the temperature increases to \(36^{\circ}\,C\) is \(............kPa\) 2023 Easy
7. 7. A diatomic gas \((\gamma=1.4)\) does \(400 J\) of work when it is expanded isobarically. The heat given to the gas in the process is ............ \(J\) 2022 Medium
8. 8. The temperature of \(3.00\, {mol}\) of an ideal diatomic gas is increased by \(40.0^{\circ} {C}\) without changing the pressure of the gas. The molecules in the gas rotate but do not oscillate. If the ratio of change in internal energy of the gas to the amount of workdone by the gas is \(\frac{{x}}{10} .\) Then the value of \({x}\) (round off to the nearest integer) is ..... . \(\left(\right.\) Given \(\left.{R}=8.31\, {J} {mol}^{-1} {K}^{-1}\right)\) 2021 Medium
9. 9. \(n-\) \(moles\) of an ideal gas with constant volume heat capacity \(C_v\) undergo an isobaric expansion by certain volume. The ratio of the work done in the process, to the heat supplied is 2019 Medium

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