Question

A container is filled with water as shown in the given figure. Which of the following statements is correct about the pressures at points A, B and C?

• A. Pressure at A > Pressure at B > Pressure at C
• B. Pressure at A = Pressure at B = Pressure at C
• C. Pressure at A < Pressure at B > Pressure at C
• D. Pressure at A < Pressure at B < Pressure at C

Answer 1

The correct option is D Pressure at A < Pressure at B < Pressure at C

Liquid pressure at a point is caused by the weight of the liquid pressing from above.
More the height of the column of the liquid above that point, the more will be the weight of the liquid pressing from above, and hence, more will be the liquid pressure at that point.
In other words we can say that, liquid pressure increases as the depth increases.
Since point A is at the least depth inside the liquid as compared to points B and C, the pressure at that point will be the minimum. Similarly, pressure at point B will be less than that at point C.