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प्रश्न
Give reasons for the following:
In cold countries, water pipes burst in winter.
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उत्तर
In cold countries water pipes burst in winter because the water has maximum density at 4°C and, due to anomalous expansion of water, it expands when the water is cooled to a temperature below 4°C
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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.
Two iron rods – one 10 m long and the other 5 m long, are heated to the same rise in temperature. Which will expand more?
One rod of copper and another identical rod of iron are heated to the same rise in temperature. Which rod will expand more? Give reason.
Iron rims are heated before they are fixed on the wooden wheels.
Why is one end of a steel girder in a bridge kept on rollers instead of fixing it in pillar?
What is thermal expansion?
What difference do you think heating the solid will make in their molecules?
Analogy:
Expansion is length:: Linear expansion.
Expansion in volume:: ______.
