A-LevelBiologyCell structure9700/12 · Oct/Nov 2016 · Q41 Mark
The diagram shows a stage micrometer scale, with divisions 0.1 mm apart, viewed through an eyepiece containing a graticule. What is the area of the field of view of the microscope at this magnification? (π = 3.14) [Figure 4.1]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Aπ× 12.5 × 12.5 = 4.9 × 10² µm²
Bπ× 50 × 50 = 7.9 × 10³ µm²
Cπ× 125 × 125 = 4.9 × 10⁴ µm²
Dπ× 250 × 250 = 2.0 × 10⁵ µm²
✓ Correct answer
C: π× 125 × 125 = 4.9 × 10⁴ µm²
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