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Fluid Mechanics

Momentum Equation-II

An open penta...

Question

An open pentagonal cylinder (B) filled with water is connected with another open cylinder (A) of different volume. Choose the correct option.

Water level in cylinder A would be greater than that in cylinder B.

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Water level in cylinder B would be greater than that in cylinder A.

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Water level in both the cylinders would be the same.

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All the water from cylinder B will get transferred to cylinder A.

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Solution

The correct option is C Water level in both the cylinders would be the same.
We know that liquid pressure is equal at the same depth. When an open pentagonal cylinder (B) filled with water is connected with another open cylinder (A) of different volume, water will flow to cylinder A such that water level in both the cylinders finally turn out be the same. This is because atmospheric pressure acts through the open ends of the cylinders on the water in both the cylinders to maintain equal liquid pressure at the same depth.

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