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Units, Dimensions and Measurement — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsUnits, Dimensions and Measurement1 Mark
MCQ
Dimensions of kinetic energy are
  • ✓
    $M L^2 T^{-2}$
  • B
    $M^2 L T^{-1}$
  • C
    $M L^2 T^{-1}$
  • D
    $M L^3 T^{-1}$
✓

Answer

Correct option: A.
$M L^2 T^{-2}$
(a) Kinetic energy $=\frac{1}{2} m v^2=M\left[L T^{-1}\right]^2=\left[M L^2 T^{-2}\right$

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