Molar Heat Capacity of Polytropic Process | JEE 2027 Physics (English)
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Molar Heat Capacity of Polytropic Process | JEE 2027 Physics (English)
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All lessons of this unit: • JEE 2027 Physics | Unit 8 Thermodynamics
Molar heat capacity of an ideal gas in any process for JEE: C = Cv + (p/n) dV/dT from the first law, the polytropic formula C = Cv + R/(1 - x), how isobaric, isothermal, adiabatic and isochoric processes fit as special cases, why C is negative for 1 x gamma (the gas takes in heat yet cools), and two solved problems with the classic traps.
Chapters
0:00 Introduction
0:26 Heat capacity depends on the process
1:52 Polytropic process: p V to the power x constant
2:40 Four familiar processes, one formula
4:23 When x is between 1 and gamma: negative heat capacity
5:27 Example 1: monatomic gas, pV squared and p proportional to V
6:48 Example 2: diatomic gas, find the process with C = minus R
8:06 Quick revision: C formula, special cases, negative C
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Physics · Unit 8 · Thermodynamics · Chapter 4 · Specific Heats of Gases
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Narrated with a computer voice.