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Question 30128
JEE Physics · Medium

Errors and Measurements: Error in Power Formula MCQ

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Error in Power FormulaMediumQuestion 30128

Question

The kinetic energy E = ½mv². If %error in m is 2% and %error in v is 3%, the %error in E is:
  1. A
    5%
  2. B
    8%
    Correct
  3. C
    6%
  4. D
    11%

Correct answer

8%

Explanation

%error in E = %error in m + 2 × %error in v = 2 + 2×3 = 8%.

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