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प्रश्न
Define heat capacity and state its SI unit.
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उत्तर
Heat capacity of a body is the amount of heat energy required to raise its temperature by 1°C. Its SI unit is JK-1
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संबंधित प्रश्न
What do you mean by the following statement?
The heat capacity of a body is 50 JK-1?
A heater of power P watt raises the temperature of m kg of a liquid by Δt K in time t s. Express
the specific heat capacity of liquid in terms of above data.
How much heat energy is released when 5.0 g of water at 20℃ changes into ice at 0℃? Take specific heat capacity of water = 4.2 J g-1 K-1, Specific latent heat of fusion of ice = 336 J g-1.
How will you prove experimentally that different substances have different specific heat capacities?
(b) 2000 J of heat energy is required to raise the temperature of 4 kg of a
metal by 3°c. Which expression gives the specific heat capacity of the metal?
Why are athletes advised to put on extra clothes after competing on event?
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 |
Specific heat capacity of a substance X is 1900 Jkg-1°C-1 means ______.
