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प्रश्न
What do you understand by the following statements:
The heat capacity of the body is 60JK-1.
उत्तर
Heat capacity is the amount of heat required to raise the temperature of a body by 1°C or 1 K. Thus, 60 JK−1 of energy is required to raise the temperature of the given body by 1 K.
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संबंधित प्रश्न
State S.I. unit of specific heat capacity.
Water is used in hot water bottles for fomentation. Give a reason.
Why do bottled soft drinks get cooled, more quickly by the ice cubes than by the iced water, both at 0℃?
Name three fossil fuels that emit carbon dioxide into the atmosphere ?
Which principle is used to measure the specific heat capacity of a substance?
What change in heat energy occurs when lead at its melting point
solidifies without change in the temperature?
Read the passage and answer the questions based on it.
If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy. The change in temperature continues till the temperatures of both objects attain the same value. In this process, the cold object gains heat energy and the hot object loses heat energy. If the system of both the objects is isolated from the environment by keeping it inside a heat-resistant box then no energy can flow from inside the box or come into the box. In this situation, we get the following principle.
Heat energy lost by the hot object = Heat energy gained by the cold object. This is called the ‘Principle of heat exchange’.
- Where does heat transfer take place?
- In such a situation which principle of heat do you perceive?
- How can this principle be explained in short?
- Which property of the substance is measured using this principle?
Match the following:
| Column A | Column B | ||
| 1. | Specific heat capacity of water | a. | 0°C |
| 2. | Latent heat of fusion of ice | b. | 2260 J/g |
| 3. | Latent heat of vaporization of water | c. | 100°C |
| 4. | The melting point of iced | d. | 4.2 J/g°C |
| 5. | The boiling point of water | e. | 336 J/g |
Find the odd one out:
