Consider two mercury barometers,one with twice the cross-section area of the other.Mercury in the wider tube will rise
A)to the same height as in the narrow tube.
B)twice as high as mercury in the narrow tube.
C)four times as high as mercury in the narrow tube.
D)more than four times as high as in the narrow tube.
E)none of the above

Question

Quizplus · Accepted Answer

The height of the mercury column in a barometer is determined by the atmospheric pressure, not the cross-sectional area of the tube. Therefore, the height of the mercury column in the wider tube will be the same as the narrow tube, as long as both tubes are exposed to the same atmospheric pressure.

Consider Two Mercury Barometers,one with Twice the Cross-Section Area of the Other.Mercury