Physics · JEE

The first law of thermodynamics, isothermal and adiabatic processes Concepts for JEE

18+ syllabus-aligned questions available

Quick answer

Master The first law of thermodynamics, isothermal and adiabatic processes by understanding definitions, standard results, and typical JEE question patterns — then practise with syllabus-aligned MCQs on Goodmarks.

Build clear conceptual foundations for The first law of thermodynamics, isothermal and adiabatic processes before speed practice. This guide covers what JEE expects and how to test yourself with MCQs.

Concept explainer

The first law of thermodynamics, isothermal and adiabatic processes is a core JEE Main Physics subtopic under Thermodynamics. Master the definitions, standard results, and typical MCQ patterns tested in JEE Main and Advanced.

Key points

Understand the definition and scope of The first law of thermodynamics, isothermal and adiabatic processes in the JEE syllabus
Memorise key formulas and standard results linked to The first law of thermodynamics, isothermal and adiabatic processes
Practise 20–40 syllabus-aligned MCQs with step-by-step solutions

JEE tips

Revise The first law of thermodynamics, isothermal and adiabatic processes with a one-page formula sheet before attempting mixed tests
After each practice set, log mistakes specific to The first law of thermodynamics, isothermal and adiabatic processes and reattempt after 48 hours

Common trap

Students often rush The first law of thermodynamics, isothermal and adiabatic processes questions without checking units, sign conventions, or boundary conditions — always verify assumptions before calculating.

Syllabus context

Part of Thermodynamics in JEE Main Physics.

Free sample questions

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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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Frequently asked questions

What concepts in The first law of thermodynamics, isothermal and adiabatic processes are essential for JEE?

Focus on core ideas across The first law of thermodynamics, isothermal and adiabatic processes. JEE tests application, not just memorisation.