Physics 5054 · O Level · Thin lenses

Thin lenses — practice question

A converging lens has a focal length of 3.0 cm. An object that is 2.0 cm tall is positioned 5.0 cm from the centre of the lens. Fig. 6.1 displays the object and lens setup.
(a)[2]

On Fig. 6.1, draw rays starting from the top of the object to show the way the lens produces an image of the object. Label the image clearly.

(b)[1]

The image is magnified. State one additional feature of the image.

(c)[2]

Calculate the linear magnification produced by the lens in this situation.

(d)[1]

State the name of one optical device that produces a magnified image as illustrated by Fig. 6.1.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: Ray through centre of lens remains undeviated

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