When one arm of a U-tube manometer is connected to a gas supply, the levels...

JAMB 1988

When one arm of a U-tube manometer is connected to a gas supply, the levels of mercury in the two arms of the U-tube is shown in the figure above, if the atmospheric pressure is 76.0cm hg, the gas pressure is

A. 62.6cm hg
B. 72.5cm hg
C. 79.5cm hg
D. 85.9cm hg

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Correct Answer: Option D

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