Q3.The focal length of as mall concave mirror is 2.5cm. in order to use this concave mirror as a dentist’s,the distance of tooth from the mirror should've
(a)5.5cm
(b)4.5cmb
(c)3.5cm
(d) 1.5cm
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b)4.5cm
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Answer:
3.5 cm in order to see a enlarge view of tooth
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