Question

Which of these measurements is expressed to four significant figures?

a. 2.6 x 104 m
b. 5.300 x 10-7 m
c. 0.108 m
d. 16.530 m

Answer 1

5.300 x 10-7 m this is the correct answer 100% so B

Answer 2

Answer: The answer is d. 16.530 m with 4 significant figures

Explanation:

Significant figures are the digits that contribute meaning in the expression

In the given options

a.
`2.6* 10^4`

Here only 2 and 6 are counted as significant digits

b.
`5.300* 10^(-7)`

Here Since the zeros are after decimal So they will not be counted in significant figure i.e. S fig =2

c. 0.108

Here No of significant figures will be 3

d. 16.530

Here the no of significant figures are 4 i.e 1 6 5 3

So the answer is d.16.530