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प्रश्न
Define the following term:
Coefficient of superficial expansion
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उत्तर
The coefficient of superficial expansion is equal to the change in the area of a rod of area 1m2 when its temperature rises by 1°c.
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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?
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.
Why is one end of a steel girder in a bridge kept on rollers instead of fixing it in pillar?
Describe an experiment to show that same volume of different liquids heated to same rise in temperature expand by different amounts.
Water is heated from 0°C to 4°C. Will it expand?
Give scientific reason.
An ordinary glass bottle cracks when boiling water is poured into it, but a borosil glass bottle does not.
Thermal expansion is always a nuisance.
What is thermal expansion?
Analogy:
Ordinary glass:: Glass tumbler.
Pyrex glass:: ______.
