Question

Which of the following measurements is most precise?

• A. 5.00 mm
• B. 5.00 cm
• C. 5.00 m
• D. 5.00 km

Answer 1

Answer: (A)

5.00 mm

Answer 2

All measurements are correct upto two places of decimal, However, the absolute error in (1) is $0.01$mm which is least of all four. So it is most precise.