Advertisements
Advertisements
प्रश्न
Give reason for the following:
Water does not run out of a dropper unless its rubber bulb is pressed.
Advertisements
उत्तर
Atmospheric pressure acting from outside the dropper balances the pressure exerted by water and water does not come out of a dropper. On pressing the dropper inside pressure of water becomes more than outside atmospheric pressure and water run out.
APPEARS IN
संबंधित प्रश्न
State two experiences that made you think that air exerts pressure.
The atmospheric pressure at sea level is nearly
Explain how is the height of mercury column in tube of a simple barometer, a measure of the atmospheric pressure.
How is the reading of a barometer affected when it is taken to (i) a mine, and (ii) a hill?
What do the following indicate in a barometer regarding weather : gradual fall in the mercury level
Name the instrument used to measure atmospheric pressure.
Draw a simple diagram of a Fortin's barometer and state how it is used to measure the atmospheric pressure.
Air pressure is expressed in ______.
The atmosphere is a layer of gases surrounding the planet.
Define High pressure
