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प्रश्न
What do you understand by thermal expansion of a substance?
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उत्तर
The expansion of a substance on heating is called the thermal expansion of the substance.
संबंधित प्रश्न
A longer rod expands ........... than a shorter rod on being heated to the same temperature.
In the ball and ring experiment, if the ball after heating is left to cool on the ring for sometime, the ball again passes through the ring. Explain the reason.
State one application of thermal expansion of liquids.
Describe an experiment to show that same volume of different liquids heated to same rise in temperature expand by different amounts.
Give scientific reason.
An ordinary glass bottle cracks when boiling water is poured into it, but a borosil glass bottle does not.
Give scientific reason.
The telephone wires which sag in summer become straight in winter.
What is the velocity of thermal radiations?
What are the different types of thermal expansions?
Define the following term:
Coefficient of cubical expansion
Borosilicate glass do not expand much on being heated.
Explain thermal expansion with suitable examples.
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.
The expansion in volume is called linear expansion.
How solids are expanded on heating?
