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प्रश्न
Why does a fountain pen leak at high altitude?
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उत्तर
A fountain pen filled with ink contains some air at a pressure equal to atmospheric pressure on earth's surface. When pen is taken to an altitude, atmospheric pressure is low so the excess pressure inside the rubber tube forces the ink to leak out.
संबंधित प्रश्न
Fill the missing word in the blank spaces in the following statements:
Air moves from a region of __________ pressure to a region of ________ pressure.
Write the numerical value of the atmospheric pressure on the earth surface in pascal.
We do not feel uneasy even under the enormous atmospheric pressure. Give a reason.
Convert 1 mm of Hg into pascal. Take density of Hg = 13.6 x 103 kg m-3 and g = 9.8 m s-2 .
Distinguish between the following:
Isobars and Isotherms
State two advantages of an aneroid barometer.
What is the purpose of a barometer? State two major defects of a simple barometer.
Humans are sensitive even to a small variations in pressure.
