﻿ What is the pressure inside a drop of mercury of radius 3.00 mm at room temperature? Surface tension of mercury at that temperature (20°C) is 0.465N/m. The atmospheric pressure is 1.01 x105 Pa. Also give the excess pressure inside the drop.  from Physics Mechanical Properties of Fluids Class 11 Manipur Board

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What is the pressure inside a drop of mercury of radius 3.00 mm at room temperature? Surface tension of mercury at that temperature (20°C) is 0.465N/m. The atmospheric pressure is 1.01 x105 Pa. Also give the excess pressure inside the drop.

Given,

Radius of drop of mercury, r = 3.0 mm

Surface tension of mercury = 0.465 N/m

Atmospheric pressure, PA = 1.01 $×$ 105 Pa

Excess of pressure inside the liquid drop is given by,

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