A student measued the diameter of a smal...

A student measued the diameter of a small steel ball using a screw gauge of least count `1.001 cm`. The main scale reading is `5 mm` and zero of circular scale division coincides with 25 divisions above the reference level. If screw gauge has a zero erroof `-0.004 cm`, the correct diameter of the ball is

`0.521 cm`

`0.525cm`

`0.053` cm

`0.526` cm

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