PYQ NEET- Accuracy & Precision Of Measuring Instruments

• NEET 2019:

We know that:

$$\frac{\Delta P}{P} = \frac{\Delta A^3B^2}{A^3B^2} + \frac{\Delta B^2}{B^2} + \frac{\Delta C^2}{C^2} + \frac{\Delta D}{D}$$

Substituting the values, we get:

$$\frac{\Delta P}{P} = 3\left(\frac{1}{100}\right) + 2\left(\frac{2}{100}\right) + 3\left(\frac{3}{100}\right) + 4\left(\frac{4}{100}\right) = 18%$$

Therefore, the percentage error in the measurement of P is 18%.

• NEET 2018:

We know that:

$$\text{Percentage error} = \frac{\text{Absolute error}}{\text{Actual value}} \times 100$$

In this case, the absolute error in the measurement of the length of