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प्रश्न
Describe an experiment to showthat air expands on heating.
उत्तर
Take a glass fL bottomed flask. Close its mouth with a cork having capillary tube containing an indicator visible in the tube as shown. Make it airtight. Place the flask in hot water. After a few minutes, we see the indicator moving up. This happens because the air inside the flask expands with rise in temperature. This proves that gases expand on heating.
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संबंधित प्रश्न
An empty glass bottle is fitted with a narrow tube at its mouth. The open end of the tube is kept in a beaker containing water. When the bottle is heated, bubbles of air are seen escaping into water. Explain the reason.
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Thermal expansion is always a nuisance.
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