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Thermodynamics
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Consider the following statements:
(i) Compressed air coming out from a punctured ball becomes hotter.
(ii) A sudden fall in the reading of a barometer indicates the sign of coming storm.
Which of the given statements is/are correct?
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A
Only 2
💡 Explanation:
Statement 1 is incorrect. Compressed air coming out from a punctured ball becomes cooler as every expanding gas produces cooling effect.
Statement 2 is correct. Barometer is a scientific instrument used to measure the atmospheric pressure. From a sudden fall in mercury of a barometer, a thunderstorm may be expected.