A dentist uses a plane mirror to see the back of a tooth.

1. (a)A plane mirror produces an image of an object. Describe the position of this image. ............................................................................................................................................................................. ............................................................................................................................................................................. [2][2]
2. (b)(i)Fig. 6.1 shows the plane mirror used by the dentist to see the point labelled X on the tooth. [Figure 6.1 (tooth, dentist's eye, mirror, point X)] On Fig. 6.1: mark the position of the image of X formed by the mirror [1][1]
3. (b)(ii)draw a ray of light from X to show how the dentist can see the tooth. [2][2]
4. (c)State one characteristic of the image formed by the plane mirror other than its position. ............................................................................................................................................................................. [1][1]

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