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प्रश्न
Which temperature segment is chosen when determining the unit of heat? Why?
उत्तर
While deciding the unit for heat, temperature interval chosen is 14.5 °C to 15.5 °C.
Reason:
When 1 kg of water is heated through 1 °C in various temperature ranges, the amount of heat required to raise temperature by 1 °C varies slightly from range to range. Hence, it is essential to define a specific temperature range while defining a unit of heat.
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संबंधित प्रश्न
Match the following
| Column A | Column B |
| 1. mercury | 1. insulator |
| 2. wood | 2. water from 0°C to 4°C |
| 3. Aluminum | 3.absorbs |
| 4. contracts | 4.conductor |
| 5.black surface | 5. Thermometer |
Select the correct alternative
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