JEE Main 2014 Physics question
An air bubble of radius 0.1 cm is in a liquid having surface tension 0.06 N/m and density kg/. The pressure inside the bubble is 1100N greater than the atmospheric pressure. At what depth is the bubble below the surface of the liquid? m
Answer: (1)
Solution
A bubble inside a liquid has a single surface, so the excess pressure due to surface tension is N/m².
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