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Question 5045
NEET Physics · Hard

Units & Measurements: Advanced Error Calculations MCQ

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Advanced Error CalculationsHardQuestion 5045

Question

The acceleration due to gravity g is measured by g = 4π²l/T². The value of l = 1.00 m with 1% error, T = 2.00 s with 2% error. The percentage error in g is:
  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%.

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