Question

Picking up a hot cup of coffee,your hands fell warm:

This is due to which of the following phenomena

• A. Conduction
• B. Convection
• C. Radiation
• D. all of these

Answer 1

Answer: (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