1.

Unit of surface tension is                                                                         [Orissa PMT 2004]

A. \[N{{m}^{-1}}\]
B. \[N{{m}^{-2}}\]
C. \[{{N}^{2}}{{m}^{-1}}\]
D. \[N{{m}^{-3}}\]
Answer» B. \[N{{m}^{-2}}\]


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