Скачать или смотреть Thermodynamics L 5 Heat, Work & Process Specific Heat CBSE + JEE

In this lecture, we continue Thermodynamics with a very exam‑oriented focus on:

First Law in different processes
Same heat at constant pressure vs constant volume
Fractions of heat used for internal energy and work
Process-specific heat \(C\) for non-standard processes
Reasoning from \(P\)–\(V\)–\(T\) relations (no rote, pure logic)

Covered Problems:
1. Free vs fixed piston: same \(Q\), compare \(\Delta T\) at constant \(P\) and constant \(V\), find ratio \(\Delta T_V / \Delta T_P\).
2. Constant pressure heating: fractions of \(Q\) going into \(\Delta U\) and \(W\) in terms of \(\gamma\).
3. Process \(P T = \text{const}\): find molar heat capacity and degrees of freedom \(f\).
4. Process \(V = a/T\): sign of work, net heat \(Q\) in terms of \(\gamma\).
5. Process \(P = \alpha T^{1/2}\): work done and process-specific heat \(C\) for a monatomic gas.
6. Quick PV-graph reasoning: sign of work in different paths.

This video is useful for:
CBSE Class 11 Physics (Thermodynamics / Thermal Properties)
CBSE Class 12 revision of First Law concepts
JEE Main & JEE Advanced (theory + typical reasoning problems)

I focus on:
Minimal theory, maximum reasoning
Clean derivations, no unnecessary memorisation
How to think in terms of graphs and signs of \(Q, W, \Delta U\)

*Do download your notes and pause where needed. Practice the ideas in 1–2 more questions from your book after watching.*