Question

Which of the following length measurement is most accurate and why? i) 5.00 cm ii)0.005 mm iii) 50.00cm

Answer 1

The most accurate measure is 0.005 mm. This is because the value has been measured up to three decimal places unlike the other two values. This means that 0.005 mm is actually closer to the value being measured than the other values as compared to the values that they represent. 

Answer 2

Answer:

Correct option:

ii) $0.005$ mm

$0.005$ mm length measurement is most accurate.

Explanation:

The accuracy of a measurement refers to how close it is to its true value.

$0.005$ mm length measurement is most accurate. $0.005$ mm is the most precise measurement. This is because, unlike the other two values, the value has been measured to three decimal places. This means that $0.005$mm is closer to the measured value than the other values when compared to the values they represent. Because $5.00$ mm has the smallest unit and the least error (commonly taken as $0.01$ mm if not specified), it is the most precise. It's critical to be accurate and precise when taking scientific measurements. The accuracy of a measurement refers to how close it is to its true value. This is significant because inaccuracies in results can result from faulty equipment, poor data processing, or human error.