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प्रश्न
What will absorb heat?
Plastic plate
विकल्प
Will absorb heat
Will not absorb heat
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उत्तर
Will not absorb heat
Explanation:
Plastic is a poor heat conductor, so it absorbs very little heat and does not heat up quickly. In contrast, materials such as metal absorb and dissipate heat quickly. This is why plastic plates do not heat up much, even when hot food is placed on them.
संबंधित प्रश्न
What is heat ? State its S.I. unit.
Name the mode of transfer of heat in the following :
(a) solid,
(b) liquid,
(c) gas
(d) vacuum
Draw a labelled diagram of a thermo flask. Explain how the transfer of heat by conduction, convection and radiation is reduced to a minimum in it.
Define one kilo-calorie of heat.
Complete the following sentence:
CGS units of heat is _________
Which temperature segment is chosen when determining the unit of heat? Why?
Write scientific reason.
In the cold regions, snow falls in winter.
The unit of heat and temperature are the same.
Match the following:
| Column A | Column B | ||
| 1. | Heat | a. | Heat gained or lost in the change of state without any change in temperature |
| 2. | m × L. | b. | Heat gained or lost when there is no change of state |
| 3. | Temperature | c. | Form of energy |
| 4. | m × s × t | d. | SI unit of specific latent heat |
| 5. | J/Kg | e. | degree of hotness or coldness |
