CAIE IGCSE Physics 3.2.3.7 Use of a Single Lens As a Magnifying Questions

Practise using a converging lens as a magnifying glass by placing the object inside the focal length and describing the enlarged, upright, virtual image.

Exam points

Place an object between a converging lens and its focal point to produce magnification, then identify the image as enlarged, upright and virtual.

[Maximum number: 1]

The lens in a magnifying glass is a converging lens.

Fig. 4.1 shows the lens of the magnifying glass, its two focal points, $F_{1}$ and $F_{2}$ , and its principal axis.

Fig. 4.1

A student using the magnifying glass sees a magnified image of an object.

On Fig. 4.1, mark:
- a point X on the principal axis for a possible position of the object
- a point E for a possible position of the student's eye.

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CAIE IGCSE Physics 3.2.3.7 Use of a Single Lens As a Magnifying Questions question 1