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प्रश्न
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 .
उत्तर
Density of Hg = `13.6 xx 10^3` kgm-3
Acceleration due to gravity , g = 9.8 ms-2
Height of mercury column = 1mm = 0.001 m
∴ Pressure , P = hρg
or , P = `(0.001)(13.6 × 10^3)(9.8)` pascal
or , P = 133.28 Pa
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संबंधित प्रश्न
State two experiences that made you think that air exerts pressure.
What do you understand by atmospheric pressure?
Illustrate with the help of a labelled diagram of a simple barometer that the atmospheric pressure at a place is 76 cm of Hg.
Mention two demerits of a simple barometer and state how they are removed in a Fortin barometer .
How does the atmospheric pressure change with altitude? Draw an approximate graph to show this variation.
Why does a fountain pen leak at high altitude?
Why do not we feel uneasy even under enormous pressure of the atmosphere above as?
One atmosphere is equivalent to 1,00,000 newton force acting on one square metre.
Why is it not advisable to use a fountain pen while travelling in an aeroplane?
The human lung is well adapted to breathe at a pressure of ______ k Pa.
