What is the pressure at points A, B, C & D marked in the given mercury barometer? Assume that you have used a tube of length greater than 76cm and then filled it completely with mercury and then inverted into a jar. Let P0 be atmospheric pressure, g be acceleration due to gravity and ρ be the density of mercury.

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What is the pressure at points A, B, C & D marked in the given mercury barometer? Assume that you have used a tube of length greater than 76cm and then filled it completely with <b>mercury</b> and then inverted into a jar. Let P<sub>0</sub> be atmospheric pressure, g be acceleration due to gravity and ρ be the density of mercury.<br><img src='https://www.fatskills.com/wp-content/uploads/2020/10/physics-mcqs-class-11-q6.png' width='250' height='210' class='295979' />






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