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)

A manometer reads the pressure of a gas in an enclosure as shown in th

1.	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)
Answer» 76,20 20,76 96,20 20,96 Solution :Here, ATMOSPHERIC PRESSURE P=76 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.