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Units and Measurement question

2023 · Q133
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Units and Measurement question

2023 · Q133

NEETPhysicsUnits and MeasurementMCQ+4 / −1

The mechanical quantity, which has dimensions of reciprocal of mass (M−1)(\mathrm{M}^{-1})(M−1) is :

  1. A
    angular momentum
  2. B
    coefficient of thermal conductivity
  3. C
    torque
  4. D
    gravitational constant
View written solutionFree

Correct answer: D

Angular momentum $$=\left[\mathrm{ML}^2 \mathrm{~T}^{-1}\right]$$

Coeff of thermal conductivity $$=\left[\mathrm{MLT}^{-3} \mathrm{~K}^{-1}\right]$$

Torque $$=\left[\mathrm{ML}^2 \mathrm{~T}^{-2}\right]$$

Gravitational constant $$=\left[\mathrm{M}^{-1} \mathrm{~L}^3 \mathrm{~T}^{-2}\right]$$

So, gravitational constant has power of $(-1)$ of $\mathrm{M}$.

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