CIE iGCSE Co-Ordinated Science B2.2 Size of specimens Exam Style Questions Paper 1
Question
What is the formula for magnification?
(A) $\frac{\text{actual size}}{\text{image size}}$
(B) $\frac{\text{actual size}}{\text{image size}}$× 100
(C) $\frac{\text{image size}}{\text{actual size}}$
(D) $\frac{\text{image size}}{\text{actual size}}$ mm
▶️Answer/Explanation
Ans : C
Question
The diagram shows a cell with a magnification of ×1000.
The width of the image is 45 mm.
What is the actual width of the cell?
(A) 45 mm (B) 4.5 mm (C) 0.45 mm (D) 0.045 mm
▶️Answer/Explanation
Ans : D
Question
The diagram shows a palisade cell from a leaf magnified 250.
The chloroplast labelled X measures 5 mm on the diagram.
What is its actual length?
(A) 0.25 mm
(B) 0.05 mm
(C) 0.02 mm
(D) 0.01 mm
▶️Answer/Explanation
Ans: C
Question
The diagram shows a beetle.
The length of the diagram is 75 mm.
The actual length of the beetle is 5 mm.
What is the magnification?
(A) ×5
(B) ×15
(C) ×80
(D) ×375
▶️Answer/Explanation
Ans: B