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A student calibrated the scale on an eyepiece graticule in the eyepiece lens of a light microscope.

The student was given a stage micrometer scale to use.

The divisions on the stage micrometer scale were 0.1 mm apart.

Which data must the student collect in order to calibrate the eyepiece graticule?

1) magnification of the eyepiece lens of the microscope
2) number of divisions of the stage micrometer scale seen in one field of view of the microscope
3) number of divisions of the eyepiece graticule scale equivalent to each division of the stage micrometer scale

1 ) 

1 and 3

2 ) 

2 and 3

3 ) 

2 only

4 ) 

3 only

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