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A glass tube of internal diameter 3.5cm ...

A glass tube of internal diameter 3.5cm and thickness 0.5 cm is held vertically with its lower end immersed in water . The downward pull on the tube to surface tension (S.T.of water =0.074N//m) is

A

`1.86xx10^(-2)`N

B

`1.86xx10^(-3)` N

C

`1.86xx10^(-1)` N

D

1.86 N

Text Solution

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The correct Answer is:
A
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