Consider the barometer shown in the following figure. If a small hole is made at a point P in the barometer tube, will the mercury come out from this hole?
Two pressures are acting upon point P:(1) Pressure due to mercury level above point P equals to P1​ (say)(2) Atmospheric pressure =P0​ (inwards)And,P0​>P1​ As the inward pressure is more, the mercury will not come out of the hole.