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Answer» There are three methods for heat transfer. They are : 1. Conduction 2. Convection 3. Radiation. Difference between conduction, convection and Radiation | Sr. No | Conduction | Convection | Radiation | | 1 | Medium is necessary for conduction of heat | Medium is necessary for convection | Medium like (Solid, Liquid Gas) is not necessary for radiations | | 2 | Heat is transferred from one atom to the next atom | Particles themselves receive heat and move to other place | Particles (atoms/molecules) are not required | | 3 | Particles (atoms) do not leave their place | Particles (Molecules) after gaining heat from the source leave their place | Particles are not required | | 4 | Transfer of heat in this method is possible from all directions | Transfer of heat may zig-zag or circular current | Transfer of heat is always in a straight line | | 5 | Transfer of heat occurs slowly | Transfer of heat occurs slowly | Transfer of heat is fast equal to the speed of light | | 6 | There is no need of any type of wave for transfer of heat | Waves are not required | Heat is transferred by electromagnetic waves like light |
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