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A manometer reads the pressure of a gas ...

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).

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