Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Units and Measurements

Question:

If force (F) velocity (υ) and time (T) are taken as fundamental units, then the dimensions of mass are

Options:

[Fv$T^{−1}$]

[Fv$T^{−2}$]

[F$v^{−1}T^{−1}$]

[F$v^{−1}$T]

Correct Answer:

[F$v^{−1}$T]

Explanation:

Since F=ma

⇒F=m$\frac{v}{t}$

⇒m=F$\frac{t}{v}$

[M]=[F][T][$v^{-1}$]=[F$v^{−1}$T]