Question

Figure ($13-Q3$ show a siphon. The liquid shown is water. The pressure difference $P_B-P_A$ between the point $A$ and $B$ is :

• A. $400N{m}^{-2}$
• B. $3000N{m}^{-2}$
• C. $1000N{m}^{-2}$
• D. zero

Answer 1

The correct option is D zero

The point A and B both lie on the surface of the water which means both the points A and B are exposed to atmospheric pressure.Thus the pressure difference between point A and B will be 0, as $P_A=P_B=1atm$