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Question
State one application of thermal expansion of liquids.
Solution
APPLICATION OF THERMAL EXPANSION OF LIQUIDS: An important application is mercury thermometer or alcohol thermometer.
When the bulb of the thermometer is kept in contact with a hot body the mercury expands and the level of mercury rises in the capillary tube.
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RELATED QUESTIONS
Equal volumes of different liquids expand by a different amount when they are heated to the same rise in temperature.
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.
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 superficial expansion
What is thermal expansion?
Explain thermal expansion with suitable examples.
Analogy:
Expansion is length:: Linear expansion.
Expansion in volume:: ______.
Analogy:
Ordinary glass:: Glass tumbler.
Pyrex glass:: ______.
