A barometer made of a very narrow tube is placed at normal temperature and pressure. The coefficient of volume expansion of mercury is 0.00018 per degree celsius and that of the tube is negligible. The height of the mercury in the tube is h. The temperature of mercury in the barometer is now raised by 1 degree celsius, but the temperature of the atmosphere does not change. Then the mercury height in the tube
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the answer will be h ..........
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