An ideal gas is trapped between mercury thread of 12cm and the closed lower end of a narrow vertical tube of uniform cross section. Length of the air column is 20.5 cm, when the open end is kept upward. If the tube is - making 30° with the horizontal then the length of the air column is (assuming temperature to be constant and atmospheric pressure = 76cm of Hg)

An ideal gas is trapped between mercury thread of 12cm and the closed

1.	An ideal gas is trapped between mercury thread of 12cm and the closed lower end of a narrow vertical tube of uniform cross section. Length of the air column is 20.5 cm, when the open end is kept upward. If the tube is - making 30° with the horizontal then the length of the air column is (assuming temperature to be constant and atmospheric pressure = 76cm of Hg)
Answer» 22 cm 18 cm 24 cm 20.2 cm Answer :A