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What is pressure due to surface tension ...

What is pressure due to surface tension in spherical drop of glycerin of diameter 2.8 mm? Surface tension of glycerin is 0.063 N//m?

A

`70 N//m^2`

B

` 90 N//m^2`

C

`80 N//m^2`

D

`100 N//m^2`

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