THERMAL PROPERTIES OF MATTER

CLASS 11 PHYSICS : CHAPTER 11

Let us start this chapter with the definitions of 'temperature' and 'heat'.

Temperature is a relative measure of the hotness or coldness of a body.

Heat is a form of energy which gets transferred between two systems or between a system and its surroundings by virtue of temperature difference.

Heat is a form of energy which produces in us the sensation of warmth.

Specific Heat: Specific heat of a substance is defined as the amount of heat required to raise the temperature of unit mass of the substance through unit degree.

Units:

CGS unit:  cal g-1 °C-1

SI unit:  J kg-1 K-1

Heat capacity: It is defined as the amount of heat required to raise the temperature of the body through unit degree.

Unit: cal °C-1

Latent heat of fusion: It is defined as the amount of heat required to change the state from solid to liquid per unit mass of the substance.

 

Past NEET Questions based on Thermal Properties of Matter

 

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