A wire of resistance `R = 100.0 Omega` and length `l = 50.0cm` is put between the jaws of screw gauge Its reading is shown in Pitch of the scregauge is `0.5mm` and there are 50 division on circular scale Find its resistivity in correct significant and maximum permissible error in p (resistivity) .

Explanation

To find the resistivity of the wire and its maximum permissible error, we will follow these steps:

### Step 1: Calculate the Diameter of the Wire
The reading of the screw gauge gives us the diameter of the wire. The pitch of the screw gauge is given as 0.5 mm, and there are 50 divisions on the circular scale.

Using the formula for the diameter:
\[ d = \left( \text{Reading on circular scale} + \text{Pitch} \times \text{Number of divisions} \right) \]

...