The unit of surface tension may be expressed as

The unit of surface tension may be expressed as
  1. joule metre
  2. newton metre
  3. joule metre \(^{-2}\)
  4. newton metre \(^{-2}\)

Solution

Unit of surface tension is \(\mathrm{Nm}^{-1}\).
Also, \(\mathrm{Jm}^{-2}=\mathrm{Nmm}^{-2}=\mathrm{Nm}^{-1}\)

Asked in: JEE Mains - Units and Dimensions - Chapter Test

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