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प्रश्न
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.
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उत्तर
When two identical rods (same length) are of different material and heated to the same rise in temperature, the copper rod will expand more than iron, since expansion depends on the nature of the material.
(Coefficient of linear expansion of copper 17 × 10-6 per °C > iron 13 × 10-6 per °C)
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संबंधित प्रश्न
What is matter? What is it composed of?
State three factors on which depend the linear expansion of a metal rod on heating.
Describe an experiment to show that same volume of different liquids heated to same rise in temperature expand by different amounts.
What is meant by thermal expansion?
Distinguish between a clinical and a laboratory thermometer.
Define the following term:
Coefficient of cubical expansion
A bimetal strip is shown in the below diagram before heating. Draw a diagram to show how it bends on heating and on cooling.
What difference do you think heating the solid will make in their molecules?
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.
Analogy:
Expansion is length:: Linear expansion.
Expansion in volume:: ______.
