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प्रश्न
Explain the following:
Why does not a Pyrex tumbler crack when hot water is poured in it?
उत्तर
Pyrex glass tumbler does not crack on adding hot water because Pyrex glass has a low coefficient of expansion. It does not expand less when hot water is added to the tumbler.
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संबंधित प्रश्न
Explain with the help of formulae the expansion coefficients of liquid and gas.
A round bottom flask containing coloured water, filtered with a stopper and a narrow glass tube is shown in the following diagram. What will happen to the water level X marked in the tube when it is placed in a hot water bath? Give a reason for your answer.
Give reasons for the following:
When boiling water is poured into a glass bottle, it generally cracks.
For a given heat in liquid, the apparent expansion is more than that of real expansion.
Explain the experiment of measuring the real and apparent expansion of a liquid with a neat diagram.
