Question

Which of the following measurements is most precise?

• A. 4.00 mm
• B. 4.00 cm
• C. 4.00 m
• D. 40.00 m

Answer 1

Answer: (A)

4.00 mm

Since the relative error in the measurement of 40.00 m is minimum, so this measurement is most accurate. The measurement 4.00 mm is most precise because it is measured with an instrument of minimum least count