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प्रश्न
Explain the following:
It is cool in the shade, when it is hot outside.
उत्तर
As earth surface gets heated by sun rays and due to process of convection the air near earth surface open to sunlight get heated while in shade sun rays does not fall on earth surface so air near that surface would not heat up.
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संबंधित प्रश्न
The temperature of a body rises by 1°C. What is the corresponding rise on the (a) Fahrenheit scale (b) Kelvin scale?
What do you mean by heat?
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One liter of mercury at 100C is heated to 300C. Find the increase in the volume of mercury. The coefficient of cubical expansion of mercury is 1.8 X 10-4 0C-1.
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Match the following
| 1. | Heat | 0o C |
| 2. | Temperature | 100o C |
| 3. | Thermal Equilibrium | kelvin |
| 4. | Ice cube | No heat flow |
| 5. | Boiling water | joule |
Distinguish between heat and temperature.
If a substance is heated or cooled, the change in mass of that substance is
Which factor determines the direction of flow of heat from one body to another?
