O-Level Physics Refraction, Lenses, Electromagnetic Waves, Dispersion, Electricity Revision Pack Zimbabwe

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This is the ZIMSEC O-Level Physics revision pack. It is a free revision pack for revision.

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• Paper 1 Question Paper1.4 MB
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• Notes13 MB
• P2 & P3 Revision Pack1.8 MB
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• Study Guide14 MB

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PAST-YEAR EXAMINATION QUESTIONS ON REFRACTION, LENSES, ELCTROMAGNETIC WAVES, DISPERSION AND ELECTRICITY

1
Describe how the focal length of a converging lens is determined by experiment.
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ANSWER
-pass a ray of light on a converging lens.
-the rays appear to meet at a point
-measure the distance from the centre of converging lens to that point using a ruler.
-that's the focal length.
2
A small object is placed on the axis of a converging lens of focal length 2 cm so that it is 5 cm from the lens.

Show, by a ray diagram inside the box, the nature and position of the image formed.