The focal length of a normal eye-lens is about (a) 1 mm (b) 2 cm
The focal length of a normal eye-lens is about
(a) 1 mm (b) 2 cm
(c) 25 cm (d) 1 m
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The focal length of a normal eye-lens is about
(a) 1 mm (b) 2 cm
(c) 25 cm (d) 1 m