Topic: Surface energy, surface tension, angle of contact, excess pressure, drops, bubbles, capillary rise· Properties of Solids and Liquids
A soap bubble, having radius of 1 mm, is blown from a detergent solution having a surface tension of 2.5×10^-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 w…
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 :
1. 100 cm
2. 10 cm
3. 1 cm
4. 0.5 cm