Question

State the mode of heat transfer, in the following situations. (a) A paper cup, full of hot soup, lying on a table. (b) Melting of chocolate, in the school bag, on a hot summer day.

Answer 1

b)radiation a)conduction

Answer 2

Mode of heat transfer in following conditions:

(a) A paper cup, full of hot soup, lying on a table - "Convection mode of heat transfer".

• In this procedure, heat is moved in the fluid and gases from region of "higher temperature to lower temperature".
• Convection happens incompletely because of the real development of atoms or because of the mass exchange.

(b) "Melting of chocolate", in the school bag, on a hot summer day – "Radiation mode of heat transfer".

• It is the procedure wherein heat is moved starting with one body then onto the next body without including the particles or the medium.
• Radiation does not depend upon medium.