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  • There is an air bubble of radius 1.0 mm in a liquid of surface tension 0.075   and density 1000 kg <img

There is an air bubble of radius 1.0 mm in a liquid of surface tension 0.075 nm^{-1}  and density 1000 kg m^{-1}  at a
depth of 10 cm below the free surface. The amount by which the pressure inside the bubble is greater than the
atmospheric pressure is ________ Pa (g = 10 ms^{-2})

Option: 1

1150


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

P_{\text {in }}=P_0+\rho g h+\frac{2 T}{r}

\begin{aligned} & P_{\text {in }}-P_0=1000 \times 10 \times 0.1+\frac{2 \times 0.075}{0.001} \\ & =1000+150 \\ & P_{\text {in }}-P_0=1150 \mathrm{~Pa} \end{aligned}

Posted by

jitender.kumar

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