Physics
Thermodynamics for JEE Main & Advanced — heat, work, and cycles
How laws of thermodynamics appear in chemistry and physics papers, and how each exam tests sign rules and PV diagrams.
On JEE Main
Main tests the first law applied to standard processes (isothermal, adiabatic, isochoric, isobaric), work done from PV diagrams, and Carnot efficiency in single-correct MCQ format. Confusion between path and state functions causes most dropped marks.
On JEE Advanced
Advanced uses multi-correct and integer formats with cycle analysis, comparing slopes of isothermal vs adiabatic curves, and efficiency limits for non-Carnot engines. Integer-type questions on the net work done in a cycle require careful area calculations on PV graphs.
How to practise
Use PracticeJEE's Thermodynamics topic under Physics for focused drills after class problem sets.
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