Advertisements
Advertisements
प्रश्न
Describe an experiment to demonstrate that air exerts pressure.
Advertisements
उत्तर
Air exerts pressure and this can be demonstrated by this experiment.
Take a glass tumbler. Fill it to the brim with water, with water overflowing the rim of the tumbler. Cover it with a piece of cardboard. Press the cardboard so that it touches the rim of the tumbler at all points. This will ensure that no air is left inside.
With the hand on the cardboard, invert the tumbler gently and remove the hand. Both cardboard and water shall not fall. This shows that air exerts pressure on the lower surface of the cardboard in the upward as shown in the figure. The upward thrust acting on the cardboard due to air pressure supports the combined weight of cardboard and water in the tumbler.
So, this shows that air exerts pressure.
APPEARS IN
संबंधित प्रश्न
Give reason for the following :
Two holes are made in a sealed oil tin to take out oil from it.
Describe an experiment to demonstrate that air exerts pressure.
Why does nose start bleeding on high mountains?
The unit torr is related to the barometric height as :
Distinguish between the following:
Isobars and Isotherms
The highest air pressure at sea level was recorded at ______ Russia.
The small variations in pressure that exist largely determine the ______ and ______ patterns of the earth.
Define Low pressure.
Define High pressure
What is referred to as atmospheric pressure?
