LECTURE 1 CHAPTER 11 HEAT

EQUPMENTS REQUIRED BEFORE START OF LECTURE BOOK (WITH THE PARTICULAR CHAPTER OPENED) ROUGH REGISTER PEN & CALCULATOR

TOPICS TO BE COVERED Heat (as an energy) Temperature Thermal Expansion Internal energy Heat energy Temperature Relation b/w Celsius & Fahrenheit Scales Thermal Expansion Linear expansion (theory + derivation) Volumetric Expansion (theory + derivation) Prove β=3α (Coefficient of Cubical Expansion of Solid Substance is Thrice of its Coefficient of Linear Expansion) Gas laws (theory + Derivations) Boyles Law Charles Law General Gas Equation Absolute Zero

Internal Energy: is the energy contained in a body Internal Energy: is the energy contained in a body. It is the sum of all types of energies possessed by a body. Heat Energy: Heat is that internal energy that transfers from one object to another object due to the temperature difference between them.

Thermal Expansion: Thermal means heat Thermal Expansion: Thermal means heat. The increase in size of the substance when heated is called thermal expansion. There are two types of thermal expansion. Linear thermal expansion Volumetric thermal expansion

Linear Expansion: The increase in the length of a substance on heating is called Linear expansion Volumetric Expansion: The increase in the volume of a substance on heating is called volumetric expansion.

Boyles Law: For a given mass of a gas, the volume of a gas in inversely proportional to the pressure of the gas if temperature is kept constant. Charles law: For a given mass of a gas, the volume of a gas in directly proportional to the absolute temperature of the gas if pressure is kept constant.

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