Advertisements
Advertisements
प्रश्न
Maximum heat is absorbed by a ______ coloured object.
पर्याय
radiation
white
conduction
blue
convection
bad conductor
good conductor
black
reflection
Advertisements
उत्तर
Maximum heat is absorbed by a black coloured object.
Explanation:
This is because black absorbs all wavelengths of light, converting them into heat energy. Lighter colours, on the other hand, reflect most of the light and absorb less heat.
संबंधित प्रश्न
Look at Figure. Mark where the heat is being transferred by conduction, by convection and by radiation.
Write true or false for a given statement.
Medium is necessary for the transfer of heat by radiation.
Fill in the blank
Heat transfer in liquids and gases is by ________.
Select the correct alternative
Heat in a liquid is transferred by
Select the correct alternative
In the process of convection, heat travel
State the direction of heat transfer by way of convection.
Conduction of heat takes place through a ______ substance.
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 |
Heat is the transfer of energy between two objects at different temperatures.
When a liquid boils, energy is absorbed.
