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STD 11 - 1. units,dimensions and measurement — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 1. units,dimensions and measurement4 Marks
Question
Which of the following is not a dimensionless quantity?
✓

Answer

$\left[\mu_{{}}\right]=1 \text { as } \mu_{{r}}=\frac{\mu}{\mu_{{m}}}$

[power factor $(\cos \phi)]=1$

$\mu_T{0}=\frac{{B}_{0}}{{H}}\left(\right.$ unit $\left.={NA}^{-2}\right)$ : Not dimensionless

$\left[\mu_{0}\right]=\left[{MLT}^{-2} {A}^{-2}\right]$

quality factor (Q) $=\frac{\text { Energystored }}{\text { Energy dissipated per cycle }}$

So $Q$ is unitless $\&$ dimensionless.

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