Same chapter3 marksDifficulty: Medium
Convert 37 °C into kelvin and 300 K into degrees Celsius.
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3 marksDifficulty: Medium
What is thermal expansion? Give one everyday example of it being allowed for.
Original Khojo Papers practice question — not from a past board paper.
Answer
Thermal expansion is the increase in the dimensions of a body when it is heated, because its particles vibrate more and move a little further apart. Gaps are left between the rails of a railway line, and bridges are mounted on rollers, so that expansion in summer does not buckle them.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Gases expand far more than liquids, and liquids more than solids.
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