Question

The diagram shows a mercury manometer. The tube is open to the atmosphere on the right-hand side. The left-hand side is connected to a container containing a gas at pressure P. 60 mm 80 mm mercury gas at pressure P Atmospheric pressure on its own supports a column of mercury of height 756 mm. Which height of column does pressure P on its own support?
A 676 mm of mercury
B 696 mm of mercury
C 816 mm of mercury
D 836 mm of mercury

Answer 1

Answer:

b.

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