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biology practical

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So you know Lumen=7.25 eyepiece graticule unit
and you know that 9 of eyepiece graticule unit -10 stage micrometer
and we also know that 1 of stage micrometer is 0.1mm
that means 10 of stage micrometer = 1 mm
and so that mean 9 eyepiece graticule unit=1mm
so 7.25= will be 7.25/9 =0.8mm
ohhh makes some sense now!!!! i am getting a little thank you dear!
 
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