CIE iGCSE Co-Ordinated Science B2.2 Size of specimens Exam Style Questions Paper 2
Question
The length of an insect in a photograph is measured as 17 mm. The actual length of the insect is 12 mm. What is the magnification of the insect in the photograph?
A. ×1.2
B. ×1.3
C. ×1.4
D. ×1.5
▶️Answer/Explanation
Answer: C. ×1.4
Explanation: Magnification is calculated using the formula: \[ \text{Magnification} = \frac{\text{Image size}}{\text{Actual size}} \] Substituting the given values: \[ \text{Magnification} = \frac{17 \, \text{mm}}{12 \, \text{mm}} \approx 1.4 \] Therefore, the magnification is ×1.4.