Question

what is meant by thermal expansion? explain expansion of solid with the help of an experiment?​

Answer 1

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What is meant by thermal expansion?

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Thermal expansion is the tendency of matter to change in shape, volume, and area in response to a change in temperature. ... The degree of expansion divided by the change in temperature is called the material's coefficient of thermal expansion. It is found to generally vary with temperature.

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Explain expansion of solid with the help of an experiment?

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Thermal expansion in solids can be understood with the ball and ring experiment.

Take a metal ball and a ring, the diameter of the ball should be such that it just passes through the ring.

Heat the ball for some time over a burner.

Try to pas-s it through the ring.

Answer 2

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