[" 15) Six successive measurement for length of chalk by vernier callipers are "4.13cm,4.11cm,4.00cm" ,"],[3.98cm,4.02cm,4.08cm" then its mean value is: "],[[" A) "3.98cm," B) "4.00cm," C) "4.05cm," D) "4.13cm]]

Explanation

To find the mean value of the six successive measurements of the length of chalk, we will follow these steps:

### Step 1: List the Measurements
The measurements taken using the vernier calipers are:
- 4.13 cm
- 4.11 cm
- 4.00 cm
- 3.98 cm
...