The refractive index (n) of glass is found to have the values 1.49,1.50,1.52,1.54 and 1.48. Calculate
(i) the mean value of refractive index,
(ii) absolute error in each measurement,
(iii) mean absolute error,
(iv) fractional error and
(v) percentage error

Explanation

To solve the problem step by step, we will follow the instructions given in the question regarding the refractive index of glass.

### Step 1: Calculate the Mean Value of Refractive Index
The mean value of refractive index (n) can be calculated using the formula:

\[ \text{Mean} = \frac{\text{Sum of measurements}}{\text{Number of measurements}} \]
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