A barometer tube reads 75cm of Hg. If the tube is gradually inclined at an angle of 30∘ with the horizontal, keeping the open end in the mercury container, find the length of the mercury column in the barometer tube.
A
86.7cm
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B
150cm
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C
75cm
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D
92.5cm
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Solution
The correct option is B150cm ∵ We are not changing the atmospheric pressure, so vertical height of Hg from the surface should not change.