Multiple Choice
An elderly person's range of vision is between 70 cm and 300 cm from the eye.What focal length lens is needed to allow her to read a newspaper clearly at the normal distance of 25 cm from her eyes?
A) 38.9 cm
B) 18.4 cm
C) 27.3cm
D) 23.1 cm
E) 70.0 cm
Correct Answer:
Verified
Correct Answer:
Verified
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