The diagram shows a stage micrometer scale viewed through an eyepiece containing a graticule.
The small divisions of the stage micrometer scale are 0.1 mm.
The stage micrometer scale is replaced by a slide of a plant cell.
What is the length of the nucleus in the plant cell?

1 )
0.8 mm
2 )
$8\mu m$
$25\mu m$
4 )
$200\mu m$
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