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प्रश्न
What do you understand by thermal expansion of a substance?
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उत्तर
The expansion of a substance on heating is called the thermal expansion of the substance.
संबंधित 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.
A cubical metal solid block is heated. How will its volume change?
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.
100 ml of each of the following liquid is heated from 10°C to 50°C. Which will expand more : (a) water (b) benzene (c) alcohol?
An iron washer is heated. State the effect on its mass.
At what temperature the pure water has (a) maximum density (b) minimum volume?
What is meant by thermal expansion?
Define the following term:
Coefficient of cubical 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.
Complete the following sentence:
When ice melts its volume ______ and density _______.
Borosilicate glass do not expand much on being heated.
What difference do you think heating the solid will make in their molecules?
- Assertion: Gas is highly compressible than solid and liquid
- Reason: Interatomic or intermolecular distance in the gas is comparably high.
What type of glassware is used in laboratories? Why?
