NEET Physics · Hard

Units & Measurements: Advanced Error Calculations MCQ

Solve this quality-checked NEET multiple-choice question, then review the correct answer and explanation.

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Advanced Error CalculationsHardQuestion 5045

Question

For g = 4π²l/T², length 1.00 m has a maximum percentage error of 1%, and period 2.00 s has 2%. Find the first-order maximum percentage error in g.
  1. A
    3%
  2. B
    5%
    Correct
  3. C
    7%
  4. D
    9%

Correct answer

5%

Explanation

% error in g = % error in l + 2 × % error in T = 1% + 2×2% = 1% + 4% = 5%.