Methods of Heat Transfer
Imagine your teacher has brought packets of biscuits to distribute in your class.
The teacher has three options.
Option 1: The teacher can give a packet of biscuit to first student and ask him/her to pass on to the next student and then next student passes it further. In this way, each one of you will receive a packet without moving from your place.
Option 2: The teacher can ask students to line up and come to his table one by one. After receiving the packet every student moves back to his/her seat.

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