Two cylindrical vessels of equal cross-sectional area. A contain water upto height h_(1) and h_(2). The vessels are interconnected so that the levels in them becomes equal. The work done by the force of gravity during the process is:

Two cylindrical vessels of equal cross-sectional area. A contain water

1.	Two cylindrical vessels of equal cross-sectional area. A contain water upto height h_(1) and h_(2). The vessels are interconnected so that the levels in them becomes equal. The work done by the force of gravity during the process is:
Answer» zero `RHO A ((h_(1) + h_(2))/(2))^(2) g` `rho A ((h_(1) - h_(2))/(2))^(2) g` `(rho A h_(1) h_(2))/(2) g` ANSWER :C