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प्रश्न
A device in which the loss of heat due to conduction, convection and radiation is minimized is ______.
विकल्प
solar cell
solar cooker
thermometer
thermos flask
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उत्तर
A device in which the loss of heat due to conduction, convection and radiation is minimized is thermos flask.
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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 |
If objects of equal masses are given equal heat, their final temperature will be different. This is due to difference in their ______.
What will absorb heat?
Wooden board
What will absorb heat?
Soil
Find the odd one out and give its explanation.
Ice is kept in a double-walled container. Why?
______ is a form of energy.
To keep her soup warm Paheli wrapped the container in which it was kept with a woollen cloth. Can she apply the same method to keep a glass of cold drink cool? Give reason for your answer.
On a cold day, it is hard to open the lid of a tight container. But when you gently heat the neck you can easily open the lid. why?
The sum of the kinetic and potential energy is called the ______ of the molecules.
