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CAIE A-Level Biology AS 1.1.3 Magnification and Actual Size Questions

Solve magnification and actual-size calculations by converting units carefully and checking scientific notation.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • Calculate magnification, actual size and image size using consistent units and appropriate scientific notation.

CAIE A-Level Biology AS 1.1.3 Magnification and Actual Size Questions question 1

[Maximum number: 1]

A prokaryotic cell which is 1μ m1 \mu \mathrm{~m} in diameter is magnified 50000 times in an electron micrograph. What is the diameter of the cell in the electron micrograph?

A

5×10−1 mm5 \times 10^{-1} \mathrm{~mm}

B

5×100 mm5 \times 10^{0} \mathrm{~mm}

C

5×101 mm5 \times 10^{1} \mathrm{~mm}

D

5×102 mm5 \times 10^{2} \mathrm{~mm}

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