Q 1958045804.     A manorneter reads the pressure of a gas in
an enclosure as shown in fig a). When a pump
removes some of the gas, the manometer reads
as in fig (b). The liquid used in the manometers
is mercury and the atmospheric pressure is
76 cm of mercury.


(a Give the absolute and gauge pressure of
the gas in the enclosure for cases (a) and
(b), in units of em of mercury.
(b) How would the levels change in case (b)
if 13.6 cm of water (immiscible with
mercury) arc poured into the right limb of
the manometer? (Ignore the small change
in the volume of the gas).