Question

a tube of length 45 cm is containing a gas in two sections separated by a mercury column of length 5 cm as shown in figure the open end of tube is just inside the Hg surface in containervfind pressure difference of gases in two sections (assume atmospheric pressure = 75 cm of Hg column) ANS is 5​

Answer 1

Answer:

pressure=h*d*g

As in the lower section height of mercury is not raised pressure in lower section=$P_{atm} =75cm of Hg$

As in the upper section height of mercury raised by 10cm pressure=75-10=65mm of Hg