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प्रश्न
What is thermal expansion?
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उत्तर
The expansion of a substance on heating is called thermal expansion.
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संबंधित प्रश्न
What do you understand by thermal expansion of a substance?
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.
Give reasons for the following:
Telephone wires sag in summer.
A bimetal strip is shown in the below diagram before heating. Draw a diagram to show how it bends on heating and on cooling.
Give reason for the following
An ordinary glass bottle cracks when boiling water is poured into it, but a borosilicate glass bottle does not.
Analogy:
Ordinary glass:: Glass tumbler.
Pyrex glass:: ______.
