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प्रश्न
What is thermal expansion?
उत्तर
The expansion of a substance on heating is called thermal expansion.
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संबंधित प्रश्न
A longer rod expands ........... than a shorter rod on being heated to the same temperature.
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.
Describe an experiment to show that same volume of different liquids heated to same rise in temperature expand by different amounts.
An iron washer is heated. State the effect on its mass.
An iron washer is heated. State the effect on its internal diameter.
Give reasons for the following:
In cold countries, water pipes burst in winter.
The expansion in volume is called linear expansion.
What type of glassware is used in laboratories? Why?
When the vibrations move from one molecule to another molecule heat will flow.
