Advertisements
Advertisements
Question
What do you understand by thermal expansion of a substance?
Advertisements
Solution
The expansion of a substance on heating is called the thermal expansion of the substance.
RELATED QUESTIONS
What is matter? What is it composed of?
State three factors on which depend the linear expansion of a metal rod on heating.
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.
State one application of thermal expansion of liquids.
An iron washer is heated. State the effect on its internal diameter.
What is the velocity of thermal radiations?
What is meant by thermal expansion?
The diagram shows a sketch graph showing a change in volume of a given mass of ice at -5°C to water at 15°C.
(i) Why does the temperature along BC remain constant?
(ii) When is the volume of water minimum?
(iii) At what temperature does water have maximum density? Explain.
A bimetal strip is shown in the below diagram before heating. Draw a diagram to show how it bends on heating and on cooling.
Thermal expansion is always a nuisance.
Give reason for the following
An ordinary glass bottle cracks when boiling water is poured into it, but a borosilicate glass bottle does not.
- Assertion: Gas is highly compressible than solid and liquid
- Reason: Interatomic or intermolecular distance in the gas is comparably high.
The expansion in volume is called linear expansion.
How solids are expanded on heating?
What type of glassware is used in laboratories? Why?
