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प्रश्न
Thermal expansion is always a nuisance.
विकल्प
True
False
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उत्तर
Thermal expansion is always a nuisance- False.
Correct statement
Thermal expansion is always beneficial.
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संबंधित प्रश्न
Equal volumes of different liquids expand by a different amount when they are heated to the same rise in temperature.
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?
Iron rims are heated before they are fixed on the wooden wheels.
Give scientific reason.
An ordinary glass bottle cracks when boiling water is poured into it, but a borosil glass bottle does not.
Distinguish between a clinical and a laboratory thermometer.
Define the following term:
Coefficient of superficial expansion
Borosilicate glass do not expand much on being heated.
What is thermal expansion?
Analogy:
Ordinary glass:: Glass tumbler.
Pyrex glass:: ______.
