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The figure shows a capillary tube of rad...

The figure shows a capillary tube of radius r dipped into water. The atmospheric pressure is `p_0` and the capillary rise of water is h. the surface tension for water-glass is s

The pressure inside water at the point A (lowest point of the ineniscus) is

A

`P_0`

B

`P_0 +(2s)/( r)`

C

`P_0 -(2s )/(r )`

D

`P_0 -(4s)/(r )`

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • The figure shows a capillary tube of radius r dipped into water. The atmospheric pressure is p_0 and the capillary rise of water is h. the surface tension for water-glass is s Initially, h = 10cm. If the capillary tube is now inclined at 45^@ , the length of water rising in the tube will be

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    B
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    C
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    D
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    the length of the tube

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    B
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    D
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