Question

Which of the following measurement is more accurate(1) 40 m(2) 0.04 m(3) 0.040 m(4) 0.4 mplease explain...i will mark brainliest. ​

Answer 1

Answer:

(3) 0.040 m

Explanation:

The value which is most precised (more digits after the decimal point) can be considered as most accurate

1. 40 m don't have any digits after decimal point

2. 0.04 m have 2 digits after the decimal point

3. 0.040 m have 3 digits

4. 0.4 m have only 1 digit

Therefore option 3 is most accurate.

This is a simple explanation but actually we have to consider the significant figures

The value which has more number of significant figures is most accurate

1. 40 m have 2 significant figures

2. 0.04 m have 2 significant figures

3. 0.040 m have 3 significant figures

4. 0.4 m have only 1 significant figure

Since, option 3 have most number of significant figures

Therefore option 3 is most accurate