Heat is a form of energy that flows between objects due to a temperature difference. It always flows from a higher temperature to a lower one. Heat transfer occurs through conduction, convection and radiation. It plays a crucial role in various physical processes such as changes in state and temperature.
Chapter 10 of Class 11 Physics focuses on thermal properties of matter. It explains temperature heat and thermal expansion of solids liquids and gases. The chapter covers specific heat capacity and latent heat. It also discusses the kinetic theory of gases and the concept of heat transfer through conduction convection and radiation.
Heat is a form of energy transferred from one body to another due to a temperature difference between them. It always flows from the body with higher temperature to the body with lower temperature. Heat causes a change in temperature, phase, or state of a substance.
The amount of heat transferred depends on the mass of the substance, its specific heat capacity, or its ability to store heat, and the temperature change. Heat is measured in joules (J) in the SI system. Other units like calories are also used, where 1 calorie equals 4.18 joules.
Three main processes are through which heat transfer occurs: conduction – direct contact, convection – fluid movement, and radiation – energy transfer through electromagnetic waves. It is used in many natural phenomena and technological processes, including cooking, weather conditions, and heating industrial installations.
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