| Convection | Conduction | |
| 1. | A method of heat transfers through fluids, i.e., liquids and gases. | A method of heat transfers through solids. |
| 2. | In convection, the transfer of heat is by the movement of the fluid itself. | In conduction, the transfer of heat is without movement of matter as a whole. |
The length of wire PQ in case of A is equal to the diameter of the semicircle formed by the wire CDE, in case B. One pin is attached to each wire with the help of wax as shown in figure above. Which pin will fall first? Explain.