Surface Tension – Excess Pressure in a Soap Bubble

2019 1 question

1. 1 Mechanical Properties of Fluids Hard
   A soap bubble, having radius of 1 mm, is blown from a detergent solution having a surface tension of $2.5\times10^{-2}\ N/m$. The pressure inside the bubble equals at a point $Z_0$ below the free surface of water in a container. Taking $g=10\ m/s^2$, density of water $=10^3\ kg/m^3$, the value of $Z_0$ is:
   A 100 cm B 10 cm C 1 cm D 0.5 cm
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