Advertisements
Advertisements
प्रश्न
Describe the crushing tin can experiment. What do you conclude from this experiment?
Advertisements
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
What name is given to thrust per unit area ?
Fill in the blank with suitable word :
In fluids (liquids and gases), pressure acts in....................directions, and pressure.................as the depth increases.
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 suitable experiment to demonstrate that a liquid exerts pressure sideways also?
The air pressure on our body is equal to ______ pressure.
Pressure exerted by a liquid is increased by
An object is put one by one in three liquids having different densities. The object floats with `1/9, 2/11` and `3/7` parts of their volumes outside the liquid surface in liquids of densities d1, d2 and d3 respectively. Which of the following statement is correct?
State whether the liquids and gases also exert 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.
