Absolute Pressure And Gauge Pressure

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 encloure as shown in fig. when some of the gas is removed by the pump, the manometer reads as in fig. the liquid used in mano-meters is mercury and the atmospheric pressure is 76 cm of mercury. (i) Given the absolute and gauge pressure of the gas in the two cases (in units of cm. of mercury). (ii) How would the levels change in case(b) if 13.6cm of water are poured into the right limb of manometer? (Ignore the change in volume of the gas).

A manometer reads the pressure of a gas in a enclosure as shown in figure(a) When some of the gas is removed by a pump, the manometer reads as in (b). The liquid used in the manometers is mercury and the atmospheric pressure is 76 cm of mercury. (i) Give the absolute and gauge pressure of the gas in the enclosure for cases (a) and (b) in units of cm of mercury . (ii) How would the level change in case (b) if 13.6 cm of water are poured into the right limb of the manometer?

Which of the following instrument is used to measure gauge pressure ?

Suppose there is an air bubble of radius inside the air cavity of radius R inside a water drop of radius 3R as shown in figure. The ratio of gauge pressure at point C to gauge pressure at point B is: -B

Suppose there is an air bubble of radius inside the air cavity of radius R inside a water drop of radius 3R as shown in figure. The ratio of gauge pressure at point C to gauge pressure at point B is: