NEET Physics · Hard

Units & Measurements: Advanced Dimensional Analysis MCQ

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Advanced Dimensional AnalysisHardQuestion 5031

Question

If the units of length and force are doubled, the unit of energy will change by a factor of:
  1. A
    2
  2. B
    4
    Correct
  3. C
    8
  4. D
    1

Correct answer

4

Explanation

Energy = Force × Length. If both force and length are doubled, new unit of energy = 2F × 2L = 4FL = 4 times the old unit.