JEE Mains · Physics · STD 11 - 9.2 surface tension
An air bubble of radius \(0 .1\, cm\) is in a liquid having surface tension \(0.06\, N/m\) and density \(10^3\, kg/m^3\). The pressure inside the bubble is \(1100\, Nm^{-2}\) greater than the atmospheric pressure. At ....... \(m\) depth is the bubble below the surface of the liquid ? \((g\, = 9.8\, ms^{- 2})\)
- A \(0.1\)
- B \(0.15\)
- C \(0.20\)
- D \(0.25\)
Answer & Solution
Correct Answer
(A) \(0.1\)
Step-by-step Solution
Detailed explanation
Given: Radius of air bubble, \(r = 0.1\,cm = {10^{ - 3}}m\) Surface tension of liquid, \(S = 0.06\,N/m = 6 \times {10^{ - 2}}\,N/m\) Density of liquid, \(\rho = {10^3}\,kg/{m^3}\) Excess pressure inside the bubble, \({\rho _{exe}} = 1100N{m^{ - 2}}\) Depth of bubble below the…
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