Question

Choose the incorrect statements out of the following:-

• A. Every measurement by any measuring instrument has some errors
• B. Every calculated physical quantity that is based on measured values has some error
• C. A measurement can have more accuracy but less precision and vice-versa
• D. The percentage error is different from relative error.

Answer 1

Answer: (D)

The percentage error is different from relative error.

$\text{We have relative error as}$

$\text{Relative error =}\frac{\text{measured value - real value}}{\text{real value}}$ $\text{We have persentage error as}$

$\text{persentage error =}\frac{\text{measured value - real value}}{\text{real value}}$

$\begin{array}{c}\text{So we get a Relation}\\ \text{Relative error}=\frac{\text{Percent error}}{100}\end{array}$