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प्रश्न
State one application of thermal expansion of liquids.
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उत्तर
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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संबंधित प्रश्न
Two identical rods of copper are heated to different temperatures — one by 5°C and the other by 10°C. Which rod will expand more?
A metal plate is heated. State three factors on which the increase in its area will depend.
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 external.
Give scientific reason.
An ordinary glass bottle cracks when boiling water is poured into it, but a borosil glass bottle does not.
What is meant by thermal expansion?
What difference do you think heating the solid will make in their molecules?
Analogy:
Expansion is length:: Linear expansion.
Expansion in volume:: ______.
Analogy:
Ordinary glass:: Glass tumbler.
Pyrex glass:: ______.
When we cool the liquid it will become ______.
