CAIE IGCSE Physics 3.2.3.1 Action of thin converging & thin
Practise describing how thin converging and diverging lenses change a parallel beam of light in ray diagrams.
- Syllabus
- 2026–2028
- Course
- Physics 0625
Exam points
- draw a parallel beam converging to a focus after a thin converging lens
- show a parallel beam spreading out after a thin diverging lens, with rays traced back
3.2.3.1—Action of thin converging and thin question 1
[Maximum number: 1]
Which statement about a thin converging lens is correct?
A
All rays of light refracted by the lens pass through the principal focus.
B
All rays initially parallel to the principal axis of the lens are refracted through the principal focus.
C
The focal length of the lens is the distance between the image and the principal focus.
D
The focal length of the lens is the distance between the object and the image.
B
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