Question
(I) $(a)$ What is the power of a 20.5 -cm-focal-length lens? (b) What is the focal length of a $-6.25$ -diopter lens? (c) Are these lenses converging or diverging?
Step 1
However, the focal length needs to be in meters for the power to be in diopters. So, we first need to convert the focal length from centimeters to meters. Show more…
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