Advertisements
Advertisements
Question
Describe the crushing tin can experiment. What do you conclude from this experiment?
Advertisements
Solution
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
RELATED QUESTIONS
Fill in the blank with suitable word :
In order to sink in a fluid, the density of an object must be .................. than the ................ of the fluid.
Pressure in a liquid ................with the depth.
Describe a suitable experiment to demonstrate that a liquid exerts pressure sideways also?
Describe a simple experiment to show that at a given depth, a liquid exerts same pressure in all directions.
Describe an experiment to prove that the pressure in a liquid increase with depth.
What is lateral pressure?
A liquid flowing out of a very small opening of a tube or tap comes out in the form of fine drops and not as a continuous stream. Why?
The pressure does not depend upon ______.
How will you calculate fluid 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.
