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Important Questions: The first law of thermodynamics, isothermal and adiabatic processes for JEE

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The most important The first law of thermodynamics, isothermal and adiabatic processes questions for JEE cover conceptual traps, standard results, and numerical patterns from The first law of thermodynamics, isothermal and adiabatic processes. Goodmarks provides 18+ high-yield MCQs with full solutions.

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Part of Thermodynamics in JEE Main Physics.

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Q1PhysicsUnit 8: Thermodynamics

The amount of work done by the gas system in increasing the volume of 10 mols of an ideal gas from one litre to 20 litres at

0^{0}

C will be

Q2PhysicsUnit 8: Thermodynamics

One mole of an ideal gas u ndergoes a process:

P=\frac{P_{0}}{1+\left(V_{0} / V\right)^{2}}

Here

P_{0}

and

V_{0}

are constants.change in temperature of the gas when volume is changed from

V=V_{0}

V=2 V_{0}

is:

Q3PhysicsUnit 8: Thermodynamics

In a certain process 500 cal of heat is given to a system and the system does

100 J

of work. The increase in internal energy of the system is

Q4PhysicsUnit 8: Thermodynamics

If a gas is compressed adiabatically by doing work of

150 \mathrm{J}

, the change in the internal energy of the gas is:

Q5PhysicsUnit 8: Thermodynamics

The change in internal energy of a system depends on

Q6PhysicsUnit 8: Thermodynamics

Which of the following options is the only correct representation of a process in which

\Delta U=\Delta Q-P \Delta V ?

Q7PhysicsUnit 8: Thermodynamics

A cyclic process is shown in the figure.Work done during isobaric expansion is:

Q8PhysicsUnit 8: Thermodynamics

When an ideal gas expands isothermally, its internal energy will

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What makes a The first law of thermodynamics, isothermal and adiabatic processes question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Thermodynamics are high-weightage?

Key areas include The first law of thermodynamics, isothermal and adiabatic processes. Prioritise these before moving to edge cases.

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Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

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