An ideal gas is trapped between a mercur...

An ideal gas is trapped between a mercury column and the closed-end of a narrow vertical tube of uniform base containing the column. The upper end of the tube is open to the atmosphere. The atmospheric pressure equals `76cm` of mercury. The lenghts of the mercury column and the trapped air column are `20cm` and `43cm` respectively. What will be the length of the air column when the tube is tilted slowly in a vertical plane through an angle of `60^(@)`? Assume the temperature to remain constant.

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48 cm

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