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Question

You measure two quantities as A = 1.0 m ± 0.2 m, B = 2.0 m ± 0.2 m. We should report correct value for √AB as:

[A] 1.4 m ± 0.4 m

[B] 1.41m ± 0.15 m

[C] 1.4m ± 0.3 m

[D] 1.4m ± 0.2 m

Answer & Explanation
Answer: 1.4m ± 0.2 m

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