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Question 30113
JEE Physics · Medium

Errors and Measurements: Error in Subtraction MCQ

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Error in SubtractionMediumQuestion 30113

Question

If A = (10.0 ± 0.2) m and B = (4.0 ± 0.1) m, then A − B =
  1. A
    6.0 ± 0.1 m
  2. B
    6.0 ± 0.3 m
    Correct
  3. C
    6.0 ± 0.2 m
  4. D
    6.0 ± 0.02 m

Correct answer

6.0 ± 0.3 m

Explanation

In subtraction, absolute errors still add: Δ(A−B) = ΔA + ΔB = 0.2 + 0.1 = 0.3 m.

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