SOLUTION: The formula P = 1/f , where f is the focal length of a lens, in meters and P is the power of the lens, in diopter, is used to determine an eyeglass prescription. If the power of a

Question 1134433: The formula P = 1/f , where f is the focal length of a lens, in meters and P is the power of the lens, in diopter, is used to determine an eyeglass prescription. If the power of a lens is 2.5 diopters, what is the focal length of the lens?
Answer by mathsolverplus(88) (Show Source): You can put this solution on YOUR website!
Given P = 1/f:
2.5 = 1/f
f = 1/2.5
f = 0.4
The focal length of the lens = 0.4 meters.

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