Advertisements
Advertisements
प्रश्न
Select the correct alternative
Heat in a liquid is transferred by
पर्याय
conduction
convection
radiation
conduction and radiation
Advertisements
उत्तर
convection
APPEARS IN
संबंधित प्रश्न
Give two examples each of conductors and insulators of heat.
No medium is required for transfer of heat by the process of ______.
Write true or false for a given statement.
Liquids are heated by conduction and radiation.
Write true or false for a given statement.
Black surfaces are the poor absorbers of heat radiations.
State the direction of heat transfer by way of convection.
______ of heat does not require a medium.
Conduction of heat takes place through a ______ substance.
The earth receives heat from the sun by ______.
Match the items in column-I to the items in column-II
| Column-I | Column-II | ||
| 1. | Linear expansion | (a) | change in volume |
| 2. | Superficial expansion | (b) | hot body to cold body |
| 3. | Cubical expansion | (c) | 1.381 X 10-23 JK-1 |
| 4. | Cubical expansion | (d) | change in length |
| 5. | Boltzmann constant | (e) | change in area |
Take a sheet of paper. Draw a spiral on it as shown in Figure. Cut out the paper along the line. Suspend the paper as shown in Figure above a lighted candle. Observe what happens. Think of an explanation.
