A manometer reads the pressure of a gas in an enclosure as shown in the figure.
The absolute and gauge pressure of the gas in cm of mercury is
(Take atmospheric pressure = 76 cm of mercury)
Text Solution
Verified by ExpertsThe correct answer is:
C
Here atmospheric pressure 
cm of mercury in figure
Pressure head, h = 20 cm of mercury
Absolute pressure = P + h = 76 + 20 = 96 cm of mercury.
Gauge pressure = h = 20 cm of mercury.
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