Physics · 2013
JEE Main · 23 April 2013, Shift 1 · Q7
A thin tube sealed at both ends is 100 cm long. It lies horizontally, the middle 20 cm containing mercury and two equal ends containing air at…
A thin tube sealed at both ends is $\displaystyle 100$ cm long. It lies horizontally, the middle $\displaystyle 20$ cm containing mercury and two equal ends containing air at standard atmospheric pressure. If the tube is now turned to a vertical position, by what amount will the mercury be displaced ?
(Given : cross section of the tube can be assumed to be uniform)
(Given : cross section of the tube can be assumed to be uniform)Official answer
(2)
5.$\displaystyle 18$ cm
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JEE Main 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.