Question

The water rises in straw due to suction,it is due to (1)Positive hydrostatic pressure (2) Negative hydrostatic pressure (3)Zero hydrostatic pressure (4)Diffusion pressure

Answer 1

)Positive hydrostatic pressure

Answer 2

The correct answer is option (2) Negative hydrostatic pressure

• The water rises in straw due to suction,it is due to Negative hydrostatic pressure.
• Hydrostatic pressure is the pressure exerted by any fluid at resting or equilibrium at any point due to gravitational force and When the force is exerted opposite to gravity it is known as negative hydrostatic pressure.
• Suction in the straw is due to the Negative hydrostatic pressure as the force for sucking the straw is exerted opposite to gravity.