JEE PHYSICS MCQ: UNITS & MEASUREMENTS

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The physical quantity that has no dimensions is

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Correct option: D

Strain

Option D is correct because strain is a dimensionless quantity, being the ratio of two lengths.

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\sqrt{\frac{\text { Modulus of elasticity }}{\text { Density }}}

\mathrm{ms}^{-1} \text {. }

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{\varepsilon _0}L\frac{{\Delta V}}{{\Delta t}},\;

{\varepsilon _0}

{\Delta V}

{\Delta t}