1.

The focal length of a small concave mirror is 2.5 cm. In the distance of tooth from the mirror should be : (a) 2.5 cm (b) 1.5 cm (c) 4.5 cm (d) 3.5 cm

Answer»

The focal length of a small concave mirror is 2.5 cm. In the distance of tooth from the mirror should be : (a) 2.5 cm (b) 1.5 cm (c) 4.5 cm (d) 3.5 cm



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