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Question 30195
JEE Physics · Medium

Errors and Measurements: Rounding — Sig Figs Advanced MCQ

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Rounding — Sig Figs AdvancedMediumQuestion 30195

Question

A student calculates a speed as 12.345678 m/s, where both distance and time were measured to 3 significant figures. The correctly reported speed is:
  1. A
    12.3 m/s
    Correct
  2. B
    12.35 m/s
  3. C
    12.346 m/s
  4. D
    12 m/s

Correct answer

12.3 m/s

Explanation

The inputs have 3 significant figures, so the output must also be limited to 3: 12.3 m/s.

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