Answer: [M T -2 ].
- A [M L T<sup>-2</sup>]
- B [M T<sup>-2</sup>]
- C [M L<sup>-1</sup> T<sup>-2</sup>]
- D [M L<sup>2</sup> T<sup>-2</sup>]
Correct answer: B. [M T<sup>-2</sup>]
Explanation: Surface tension is force per length = [M L T<sup>-2</sup>] / [L] = [M T<sup>-2</sup>]. It has the same dimensions as spring constant and surface energy per area.
The 7 SI base units. All derived units (newton, joule, watt, volt, etc.) can be expressed as combinations of these 7 fundamental units raised to various powers.
Concept context
SI base units, dimensional analysis, significant figures, and error propagation. The toolkit every physics calculation relies on.