Physics 0625 · IGCSE · Light

Light — practice question

Fig. 7.1 illustrates a converging lens, its principal axis and an object O, with each principal focus of the lens marked F.
(a)[3]

On Fig. 7.1, construct a ray diagram to show where the lens forms the image. Label the image I.

(b)[2]

Describe the nature of the image I.

(c)[1]

Images produced by lenses can sometimes show coloured edges. Suggest a reason for this.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: Ray parallel to axis and through F

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