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A thread of mercury of length 15cm is used to trap some air in a...

A thread of mercury of length 15cm is used to trap some air in a capillary tube with uniform cross sectional area and one closed at one end. With the tube vertical and the open end uppermost, the length of the trapped air column is 20cm. Calculate the length of the air column when the tube is held horizontally and vertically with the open end underneath.?
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Asked by Tboy tmb on 31st May, 2022
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