Multiple Choice
A lens of flint glass index of refraction of 1.60) has a concave surface with radius 12 cm and a convex surface with radius 10 cm, respectively. The focal length of this lens is
A) 100 cm,
B) -100 cm,
C) 9.1 cm,
D) -9.1 cm,
E) 14.5 cm,
Correct Answer:
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