A-LevelBiologyCell structure9700/12 · Oct/Nov 2021 · Q21 Mark
The eyepiece of a microscope is fitted with an eyepiece graticule and a stage micrometer scale is placed on the microscope. Which statements about the stage micrometer scale are correct? 1 The scale can be used to measure the actual length of cells directly. 2 The scale allows you to calibrate the eyepiece graticule. 3 Less of the scale is visible as the objective lens changes from ×10 to ×40.
A1, 2 and 3
B2 and 3 only
C1 only
D2 only
✓ Correct answer
B: 2 and 3 only
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