Picking up a hot cup of coffee,you are burnt due to

Conduction

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Convection

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Radiation

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all of these

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Solution

The correct option is A Conduction
Conduction, Convection and radiation are three modes of transfer of heat. Conduction can take place in any medium. However, a material medium is necessary. Convection can take place only through liquids and gases. Radiation is independent of the material. when we pick up a cup of hot coffee, heat is transferred from the cup to our hands. Since cup is solid there is no question of convection. But conduction is definitely possible. Hence the correct option is A

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