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The surface tension of water at 20°C is ...

The surface tension of water at 20°C is 72.75 dyne `cm^(-1)` . Its value in SI system is

A

`7.275 Nm^(-1)`

B

`0.7275 Nm^(-1)`

C

`0.07275 Nm^(-1)`

D

None of the above

Text Solution

Verified by Experts

`72.75 ("dyne")/(cm) = (10^(-5))/(10^(-2)) N/m`.
`implies 72.75 xx 10^(-3) N-m^(-1) = 0.07275 N//m`.
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