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प्रश्न
Maximum heat is absorbed by a ______ coloured object.
पर्याय
radiation
white
conduction
blue
convection
bad conductor
good conductor
black
reflection
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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
No medium is required for transfer of heat by the process of ______.
Write true or false for a given statement.
Black surfaces are the poor absorbers of heat radiations.
Select the correct alternative
If we add a lump of ice to a tumbler containing water,
State the direction of heat transfer by way of convection.
Give one example of heat transfer by radiation.
______ of heat does not require a medium.
Why is the outer coat of the penguins of Antarctica black?
Why are heaters fitted near the floor and air conditioners near the ceiling of a room?
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 |
The handles of cooking utensils are made of ______.
