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प्रश्न
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उत्तर
The pressure is given by P = h Xp Xg.
Where h is the height of the liquid column, p is the density of the liquid, g is the acceleration due to gravity.
Density of mercury is = 1.36 X104 kg/m3.
h = height of mercury column which is given = 75 cm = 0.75 m.
So pressure = 0.75 X 1.36 X104X9.8 = 9.996X104Nm-2.
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संबंधित प्रश्न
State two experiences that made you think that air exerts pressure.
The atmospheric pressure at sea level is nearly
How does the atmospheric pressure change with altitude?
Explain the following :
A balloon collapses when air is removed from it.
Explain the following :
Water does not run out of a dropper unless its rubber bulb is pressed .
Why does the liquid rise in a syringe when its piston is pulled up?
Illustrate with the help of a labelled diagram of a simple barometer that the atmospheric pressure at a place is 76 cm of Hg.
Why does nose start bleeding on high mountains?
What is the purpose of a barometer? State two major defects of a simple barometer.
Briefly explain the concept of variation of atmospheric pressure.
