Advertisements
Advertisements
Question
Give reason for the following:
Water does not run out of a dropper unless its rubber bulb is pressed.
Advertisements
Solution
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
RELATED QUESTIONS
Nose bleeding may occur at a high altitude because
Give reason for the following:
A balloon collapses when air is removed from it.
How does the pressure at a certain depth in sea water differ from that at the same depth in river water? Explain your answer.
Describe an experiment to demonstrate that air exerts pressure.
Mention two demerits of a simple barometer and state how they are removed in a Fortin barometer .
Select the correct option.
The atmospheric pressure on the earth’s surface is approximately
State two factors which affect the atmospheric pressure as we go up.
On the earth, air pressure is ______
What is meant by atmospheric pressure?
