Explanation :
It is given that,
Area of the container, [tex]A=1m^2[/tex]
Load carried by piston, m = 350 kg
Pressure on the upper surface of the liquid is defined as the force acting per unit area.
Mathematically it can be written as :
[tex]P=\dfrac{F}{A}[/tex]
From Newton's second law of motion :
F = m a
So, [tex]P=\dfrac{mg}{A}[/tex]
[tex]P=\dfrac{350\ kg\times 9.8\ m/s^2}{1\ m^2}[/tex]
P = 3430 Pa ( Pa = pascal)
or
P = 3.43 kPa
So, the correct option is (D)
Hence, this is the required solution.
