Advertisements
Advertisements
प्रश्न
Describe the crushing tin can experiment. What do you conclude from this experiment?
उत्तर
Take a tin-can having an airtight cap (screw cap). Remove cap and boil some water in it, so that steam comes out and in this way air from inside goes out. While boiling replace the cap and allow it to cool. Vapours inside condense and form water creating a vacuum above them. We see the can crumbles due to air pressure from outside. This proves that air exerts pressure.
APPEARS IN
संबंधित प्रश्न
Why is it difficult to hold a school bag having a strap made of a thin and strong string?
What force acting on an area of 0.5 m2 will produce a pressure of 500 Pa ?
Fill in the blank with suitable word :
If the area of a snow shoe is five times....................... than the area of an ordinary shoe, then the pressure of a snow shoe on the snow is five times...............
Pressure exerted by a liquid is due to it
Describe a simple experiment to show that at a given depth, a liquid exerts same pressure in all directions.
The air pressure on our body is equal to ______ pressure.
The pressure of a liquid column ______ with the depth of the column.
The pressure at the bottom of a tank containing liquid does not depend upon the ______.
Name an instrument used to measure the difference in the liquid pressure.
Assertion (A): The force acting on the surface of a liquid at rest, under gravity, in a container is always horizontal.
Reason (R): The forces acting on a fluid at rest have to be normal to the surface.