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Thermodynamics

ICSE · Class 11 · Physics

Quick revision notes for Thermodynamics — ICSE Class 11 Physics. Key concepts, formulas, and definitions for last-minute revision.

44 questions36 flashcards5 concepts

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A diagram illustrating two systems (A and B) in thermal contact, showing heat transfer until they reach thermal equilibrium where there is no net heat flow and both systems are at the same temperature
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Key Topics to Revise

1

Basic Terms and Zeroth Law

  • A system has a fixed amount of matter enclosed within a surface and studied thermodynamically.
  • Surroundings are everything outside the system and may directly affect the system.
  • An isolated system cannot exchange matter or energy with any other body or system.
2

Heat, Work, and Mechanical Equivalent of Heat

  • Heat is energy transferred due to temperature difference.
  • Work is energy transferred without dependence on temperature difference.
  • Heat given by a system is taken as negative.
3

Work Done by a Gas and P-V Graph

  • If a gas expands, it does work on the surroundings.
  • If a gas is compressed, work is done on the gas.
  • The infinitesimal work done by a gas is dW = P dV.
4

Internal Energy and First Law of Thermodynamics

  • Internal energy is the sum of kinetic and potential energy of the molecules of a system.
  • Internal energy depends only on the state of the system, not on the path used to reach that state.
  • The difference Q − W is defined as the change in internal energy, ΔU.

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Key Concepts

A system is a fixed amountBodies in thermal equilibrium haveIf two bodies A and BHeat is energy transferred dueJoule showed that 4

Frequently Asked Questions

What are the important topics in Thermodynamics for ICSE Class 11 Physics?
Key topics in Thermodynamics include Thermodynamics – Chapter Overview Mind Map, Flowchart showing how adiabatic processes affect internal energy and temperature based on work direction, Mind map showing the definition, properties, and dependencies of internal energy. These are the concepts ICSE Class 11 examiners draw on most — study them first, then practise related questions.
How to score full marks in Thermodynamics — ICSE Class 11 Physics?
Understand the core concepts first, then work through the 44 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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