Dimensional formula of surface tension

Surface tension
[M T−2]
Written in full: [M¹ L⁰ T⁻² A⁰ K⁰]

How to derive it

Surface tension = Force ÷ Length

Put in the dimensions of each part: [MLT⁻²] ÷ [L] = [M T⁻²].

mass (M)
1
length (L)
0
time (T)
-2
current (A)
0
temperature (K)
0

SI unit

The SI unit of surface tension is N/m.

Same dimensions as surface tension

These quantities have exactly the same dimensions, a favourite trick in JEE and NEET "which pair has the same dimensions" questions:

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More from Fluids

QuantityFormula
Pressure[M L−1 T−2]
Density[M L−3]
Coefficient of viscosity[M L−1 T−1]
Kinematic viscosity[L2 T−1]