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One end of a glass capillary tube with a...

One end of a glass capillary tube with a radius `r=0.05cm` is immersed into water to a depth of `h=2cm`.Excess pressure required to blow an air bubble out of the lower end of the tube will be `(S.T` of water `=70"dyne"//cm`).Take `g=980cm//s^(2)`.

A

`480 N//m^(2)`

B

`680 N//m^(2)`

C

`20003 N//m^(2)`

D

`820 N//m^(2)`

Text Solution

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The correct Answer is:
C
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