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प्रश्न
A marble tile would feel cold as compared to a wooden tile on a winter morning because the marble tile
पर्याय
is a better conductor of heat than wooden tile.
is polished while wooden tile is not polished.
reflects more heat than wooden tile.
is a poor conductor of heat than the wooden tile.
उत्तर
is a better conductor of heat than wooden tile.
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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 |
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
Fill in the blank and rewrite the sentence.
If objects of equal masses are given equal heat, their final temperature will be different. This is due to difference in their ................. .
Complete the following sentence:
CGS units of heat is _________
Which temperature segment is chosen when determining the unit of heat? Why?
Which of the following substances will absorb more heat energy?
In arrangements, A and B shown in Figure 4.7, pins P and Q are fixed to a metal loop and an iron rod with the help of wax. In which case are both the pins likely to fall at different times? Explain.
Explain the following effects of heat.
Chemical changes
