A 10 cm column of air is trapped by a column of mercury, 8 cm long, in a capillary tube horizantally fixed as shown below, at 1 atm pressure. When the tube is held at certain angle `theta^(@)` with open end up, the weight of Hg is borne partially by the gas. Vertical Height of Hg is a measure of additional pressure on gas.

The length of air coloumn,when the tube is fixed vertically at the same temperature wth open end up is

Options

A. `(76 xx 84)/10` cm
B. `(76 xx 10)/84` cm
C. `(84 xx 10)/76` cm
D. `(76 xx 10)/68 `cm

Answer

B