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प्रश्न
Define specific heat capacity.
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उत्तर
The specific heat capacity of a substance is defined as the amount of heat energy required to raise the temperature of 1 kilogram of a substance by 1°C or 1 K. It is denoted by the symbol C.
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संबंधित प्रश्न
Specific heat capacity of substance A is 3.8 J g-1K-1 whereas the specific heat capacity of substance B is 0.4 J g-1 K-1
(i) Which of the two is a good conductor of heat?
(ii) How is one led to the above conclusion?
(iii) If substances A and B are liquids then which one would be more useful in car radiators?
Write the approximate value of specific heat capacity of water in S.I. unit.
Explain, why temperature in hot summer, falls sharply after a sharp shower?
Give two reasons as to why copper is preferred over other metals for making calorimeters.
Write an expression for the heat energy liberated by a hot body.
How much heat energy is necessary to raise the temperature of 5 kg of water from 20°C to 100°C?
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 |
To study energy exchange between hot and cold objects, the system of both objects is isolated from the environment by keeping them inside ______.
Match the columns:
| Column ‘A’ | Column ‘B’ |
| The SI unit of specific heat capacity | (a) Jkg−1°C−1 |
| (b) kg/m3 | |
| (c) calorie |
