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प्रश्न
Kerosene contracts on heating.
पर्याय
True
False
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उत्तर
False.
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संबंधित प्रश्न
What do you understand by thermal expansion of a substance?
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.
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.
Define the following term:
Coefficient of superficial expansion
Give reasons for the following:
Telephone wires sag in summer.
The diagram shows a sketch graph showing a change in volume of a given mass of ice at -5°C to water at 15°C.
(i) Why does the temperature along BC remain constant?
(ii) When is the volume of water minimum?
(iii) At what temperature does water have maximum density? Explain.
If you heat a circular disk with a hole, what change do you expect in the diameter of the hole? Remember that the effect of heating increases the separation between any pair of particles.
