Advertisements
Advertisements
प्रश्न
In the arrangements A and B shown in the following figure, 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.
Advertisements
उत्तर
In case B, the pin P will fall before the pin Q because the heat will reach pin P first. In case A, the heat travels in both directions and pins P and Q will fall simultaneously.
APPEARS IN
संबंधित प्रश्न
What is heat ? State its S.I. unit.
Name the three modes of transfer of heat.
What will absorb heat?
Steel spoon
Which temperature segment is chosen when determining the unit of heat? Why?
A device in which the loss of heat due to conduction, convection and radiation is minimized is ______.
We reduce the heat by adding ______ while preparing fruit juice.
We feel the heat on our body when the ______ shines.
The sun gives us light and heat.
The SI unit of heat energy is ______.
Match the following
| 1. | Heat | a. | Good absorber |
| 2. | Temperature | b. | Form of energy |
| 3. | Black surface | c. | Insulators |
| 4. | Rubber, cork | d. | The measure of hotness or coldness |
