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प्रश्न
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उत्तर
Take a ball and ring apparatus as shown in figure. At room temperature, the ball can just pass through the ring. Now heat the ball over a flame and try to pass it through the ring. You will find that the ball when heated is not able to pass through the ring. The diameter of the ball increases when the ball is heated. This shows the expansion of solid on heating.
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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.
State three factors on which depend the linear expansion of a metal rod on heating.
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?
An iron washer is heated. State the effect on its internal diameter.
Give reasons for the following:
Telephone wires sag in summer.
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.
Analogy:
Expansion is length:: Linear expansion.
Expansion in volume:: ______.
What type of glassware is used in laboratories? Why?
When the vibrations move from one molecule to another molecule heat will flow.
