The focal length of small concave mirror is 2.5 cm. In order to use this concave mirror as a dentist's mirror, the distance of tooth from the mirror should be : and explain why.
(a) 2.5
(b) 1.5
(c) 4.5
(d) 3.5
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1.5
Explanation:
In in order to use the concave mirror by dentist we want to get the enlarge image so,When, the image is placed between the pole and the focus of a concave mirror, an enlarged image is formed. So, the distance of the tooth from the mirror should be 1.5 CM.
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