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Dimensions of surface energy are...

Dimensions of surface energy are

A

`J`

B

`Jm^(-2)`

C

`J m^(-1)`

D

`J m`

Text Solution

Verified by Experts

The correct Answer is:
B
If the surface of the liquid is increased by pulling a molecule from the bulk, attractive forces will have to be overcome. This will require an expenditure of energy. The energy required to increase the surface area of the liquid by one unit amount is defined as surface energy. Thus , its dimensions are `J m^(-1)`.
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