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प्रश्न
A certain amount of heat Q will warm 1 g of material X by 3°C and 1 g of material Y by 4°C. Which material has a higher specific heat capacity?
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उत्तर
We know that heat Q warms 1 g of material X by 3°C. Therefore, substituting these values in a specific heat formula, we get:
Q = 1 × Cx × 3 ...(1)
Similarly, heat Q warms 1 g of material Y by 4°C, therefore
Q = 1 × Cx × 4 ...(2)
As the same heat Q is provided to both materials, the left-hand side of equations (1) and (2) are the same. Hence, on comparing the right-hand sides, we get,
3Cx = 4Cy
Cx = `4/3`Cy and
Cy = `3/4`Cx
Hence, material X has greater specific heat than material Y. It is because its temperature rises less than Y for the mass amount of heat.
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Specific heat capacity of a substance A is 3.8 J g-1 K-1 and of substance B is 0.4 J g-1 k-1. Which substance is a good conductor of heat? How did you arrive at your conclusion?
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At same temperature and pressure of an ideal gas, ____________.
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 |
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