Question

Which of the following is most accurate?

• A. $20\times {10}^1\text{m}$
• B. $0.2\times {10}^3\text{m}$
• C. $200.0\text{m}$
• D. $2\times {10}^2\text{m}$

Answer 1

The correct option is C $200.0\text{m}$

We know that accuracy depends on the number of significant figures. More the number of significant figures more is the accuracy of the measurement.
Out of the given options, option $\left(A\right)$ has most number of significant figures, so it is the correct answer.