concave mirror in a dentist chair of an example of
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Concave mirror in a dentist chair of an example of Magnification of the object.
Explanation:
- When the dentist takes his mirror very close to the teeth the object lies beyond the focal point and nearer to the pole of the mirror.
- On drawing the corresponding ray diagram we find it out that the image so formed is virtual, erect and magnified.
- The magnified image can better be analysed by the dentist. Hence he uses a concave mirror.
- On using a convex mirror, the image would have been smaller and on using a plane mirror the image would have been of the same size.
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