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Question 30112
JEE Physics · Medium

Errors and Measurements: Error in Addition MCQ

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Error in AdditionMediumQuestion 30112

Question

If A = (5.0 ± 0.1) cm and B = (3.0 ± 0.2) cm, then A + B =
  1. A
    8.0 ± 0.1 cm
  2. B
    8.0 ± 0.3 cm
    Correct
  3. C
    8.0 ± 0.2 cm
  4. D
    8.0 ± 0.02 cm

Correct answer

8.0 ± 0.3 cm

Explanation

For addition/subtraction, absolute errors add: ΔC = ΔA + ΔB = 0.1 + 0.2 = 0.3 cm.

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