Question

c) State any two laws of liquid pressure
Write
the formula for pressure exerted
by a liquid coloumn? physics icse cl 9 book concise selina. thankyou.
​

Answer 1

The laws of liquid pressure are: The liquid pressure is same at all points lying on the same horizontal plane in a stationary liquid. The liquid pressure at a point inside the liquid is same in all directions. ... The pressure of liquid at same depth is different for different liquids.

The pressure exerted by a column of liquid of height h and density ρ is given by the hydrostatic pressure equation p = ρgh, where g is the gravitational acceleration.

Derivations from other quantities: p = F / A

In SI base units: 1 N/m2, 1 kg/(m·s2), or 1 J/m3

SI unit: Pascal

Dimension: M L−1 T−2