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Question 30115
JEE Physics · Medium

Errors and Measurements: Error in Power MCQ

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Error in PowerMediumQuestion 30115

Question

If Q = R³ and percentage error in R is 2%, the percentage error in Q is:
  1. A
    2%
  2. B
    3%
  3. C
    6%
    Correct
  4. D
    8%

Correct answer

6%

Explanation

For a power, the percentage error multiplies: %error in Q = 3 × %error in R = 3 × 2 = 6%.

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