Advertisements
Advertisements
प्रश्न
Fill in the blank
A hot metallic piece is placed in tap water contained in a bucket. Heat will flow from _______ to _________
Advertisements
उत्तर
A hot metallic piece is placed in tap water contained in a bucket. Heat will flow from metallic piece to water.
APPEARS IN
संबंधित प्रश्न
Give two examples each of conductors and insulators of heat.
A wooden spoon is dipped in a cup of ice cream. Its other end ______.
Fill in the blank
Heat transfer in solids is by ______
Fill in the blank
Heat transfer in liquids and gases is by ________.
Why is the freezing chest in a refrigerator fitted near its top?
Give one example of heat transfer by radiation.
Explain which mode of heat transfer causes sea breezes and land breezes.
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.
