Homework Help: physics

Posted by Jim on Monday, March 21, 2011 at 7:12pm.

A person sees clearly wearing eyeglasses that have a power of −2.92 diopters and sit 2.22 cm in front of the eyes.
If the person wants to switch to contact
lenses, which are placed directly on the eyes,what lens power should be prescribed?
Answer in units of diopter.

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