Problem a colleague wears eyeglasses that rest 190 cm in, Ask an Expert

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Problem: A colleague wears eyeglasses that rest 1.90 cm in front of her eyes and have a power of 2.00 D.

(a) Determine the focal length of her glasses.

(b) Determine the refracting power of the contact lens that would replace her glasses.

Please show each sate in detail for help and thanks in advance.

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