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Question
Describe an experiment to show that the liquid pressure at a point increases with the increase in height of the liquid column above that point.
Solution
Experiment: Tie a balloon at one end of a glass tube open at both ends. Pour some water and note the bulging of the balloon as in
. Now add more water in the tube bulging also increases. Add still more water bulging also increases further as liquid pressure at a point increases with increase in height of the liquid column above that point.
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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.
