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in a mercury barometer we say thatpressure where the tube touches the liquid at its surface and the pressure at the surface is equal to atmosphere pressure why we say that pressure at same level is same as in the tube we have mercury outsid the tube we have air

in a mercury barometer we say thatpressure  where the tube touches the liquid at its surface and the pressure at the surface is equal to atmosphere pressure


why we say that pressure at same level is same as in the tube we have mercury outsid the tube we have air

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1 Answers

Abhishek Kumar
askIITians Faculty 255 Points
9 years ago
At the surface of the mercury, Pressure are equal in the two medium. So, we use this equality to get the inside pressure.

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