Advertisements
Advertisements
प्रश्न
In the ball and ring experiment, if the ball after heating is left to cool on the ring for sometime, the ball again passes through the ring. Explain the reason.
Advertisements
उत्तर
On heating the ball expands and increases in size and cannot pass the ring when left on it. As the ball cools, it contracts, size becomes less than ring and passes the ring.
APPEARS IN
संबंधित प्रश्न
The increase in length of a metal rod depends on
One rod of copper and another identical rod of iron are heated to the same rise in temperature. Which rod will expand more? Give reason.
Iron rims are heated before they are fixed on the wooden wheels.
What is meant by thermal expansion?
Define the following term:
Coefficient of superficial expansion
Define the following term:
Coefficient of cubical expansion
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.
