Answer / karthikeyan

Three modes of heat transfer is
Conduction,convection,radiation.
CONDUCTION;In heat transfer, conduction (or heat
conduction) is the transfer of thermal energy between
neighboring molecules in a substance due to a temperature
gradient.
CONVECTION:Convection is the movement of molecules within
fluids (i.e. liquids, gases and rheids). It cannot take
place in solids.
RADIATION:radiation describes any process in which energy
emitted by one body travels through a medium or through
space.

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