Advertisements
Advertisements
प्रश्न
If you heat a circular disk with a hole, what change do you expect in the diameter of the hole? Remember that the effect of heating increases the separation between any pair of particles.
Advertisements
उत्तर
- If I heat a circular disk with a hole the diameter of the hole will increase.
- Because thermal expansion takes place when we heat the disk.
APPEARS IN
संबंधित प्रश्न
The increase in length of a metal rod depends on
What do you understand by thermal expansion of a substance?
A metal plate is heated. State three factors on which the increase in its area will depend.
An empty glass bottle is fitted with a narrow tube at its mouth. The open end of the tube is kept in a beaker containing water. When the bottle is heated, bubbles of air are seen escaping into water. Explain the reason.
Give reasons for the following:
Telephone wires sag in summer.
Complete the following sentence:
When ice melts its volume ______ and density _______.
A bimetal strip is shown in the below diagram before heating. Draw a diagram to show how it bends on heating and on cooling.
Explain thermal expansion with suitable examples.
