First slide

Dimensions of physical quantities

Question

The fundamental unit, which has the same power in the dimensional formulae of surface tension and coefficient of viscosity is

Easy

A

mass
B

length
C

time
D

None of these

Solution

[Surface tension] = $[M L^{0} T^{- 2}], [v i s \cos i t y] = [M L^{- 1} T^{- 1} .]$
Clearly, mass has the same exponent in these physical quantities.

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