Name the mode of heat transfer in each of the following cases:
a) A spoon kept in a hot cup becomes warm ______________________________________________
b) Heat energy reaching us from the sun ___________________________________________________
c) In a vessel of boiling water______________________________________________________________
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A spoon kept in a hot cup becomes warm due to conduction.
Heat energy reaching us from the sun is due to radiation.
In a vessel of boiling water is due to convection.
What is Conduction?
In Conduction, heat is transferred from one body to another by direct contact.
The rate of heat transfer is slow in conduction.
What is Radiation?
In Radiation, heat is transferred from one body to another as electromagnetic waves.
The rate of heat transfer is the fastest in radiation.
What is Convection?
In Convection, The heat is transferred within the fluid as the hotter and less tendency material rise and dense material sinks.
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