A thin tube sealed at both ends is 100 ~cm long. It lies...

A thin tube sealed at both ends is

100 \mathrm{~cm}

long. It lies horizontally, the middle

20 \mathrm{~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 ? A thin tube sealed at both ends is 100 ~cm long. It lies horizontally, the middle 20 ~cm containing mercury and two

A thin tube sealed at both ends is 100 ~cm long. It lies horizontally, the middle 20 ~cm containing mercury and two

(Given : cross-section of the tube can be assumed to be uniform)

Options

A $2.95 \mathrm{~cm}$
B $5.18 \mathrm{~cm}$
C $8.65 \mathrm{~cm}$
D $0.0 \mathrm{~cm}$

Correct answer

B. $5.18 \mathrm{~cm}$

Step-by-step solution

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