Advertisements
Advertisements
Question
Why are the houses in Rajasthan painted white?
Advertisements
Solution
White colours are reflectors of heat. Thus, Rajasthan, a very hot state, has houses with their walls painted white so that most of the heat from the sun is reflected back to the atmosphere. This keeps the houses cool from inside.
RELATED QUESTIONS
Look at Figure. Mark where the heat is being transferred by conduction, by convection and by radiation.

A wooden spoon is dipped in a cup of ice cream. Its other end ______.
Fill in the blank
Heat transfer in solids is by ______
Select the correct alternative
Heat in a liquid is transferred by
Select the correct alternative
The vacuum kept in between the walls of a thermos flask reduces the heat transfer by
Conduction of heat takes place through a ______ substance.
Why is the outer coat of the penguins of Antarctica black?
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 ______.
Heat is the transfer of energy between two objects at different temperatures.
