(a) What is the power of a 45.1 cm focal length lens, (b) What is the focal length of a -7.64 diopter lens.
Added by Anele Z.
Step 1
The focal length should be in meters for this formula. So, first convert the focal length from cm to m: 45.1 cm = 0.451 m. Then, substitute this into the formula to find the power: P = 1/0.451 = 2.22 diopters. Show more…
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