Question

(IV) Which of the following measurements are most accurate
(a) 20.0

(b) 0.0002

(c) 2.0
(d) 20.00​

Answer 1

Explanation:

Out of given options, the most accurate value is 40 meters as the chances of getting relative error is least. Precision is defined as how close the measurements to each other. Out of given options, the precise value is 4.00 mm as it measured with a instrument of minimum least count.

so 20 is correct answer