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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
The dimensional formula for impulse is same as the dimensional formula for
  • ✓
    Momentum
  • B
    Force
  • C
    Rate of change of momentum
  • D
    Torque
✓

Answer

Correct option: A.
Momentum
(a)
${ Momentum }=m v=\left[M L T^{-1}\right] $
$\text { Impulse }=\text{Force } \times \text { Time }=\left[M L T^{-2}\right] \times[T]=\left[M L T^{-1}\right]$

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Column 1 Column II

(i) Curie $M L T^{-2}$
(ii) Light year $M$
(iii) Dielectric strength Dimensionless
(iv) Atomic weight $T$
(v) Decibel (E) $M L^2 T^{-2}$
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