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An elderly sailor is shipwrecked on a desert island, but manages to save his eyeglasses. The lens for one eye has a power of +1.28 diopters, and the other lens has a power of +8.70 diopters.

(a) What is the magnifying power of the telescope he can construct with these lenses?

m = ________

(b) How far apart are the lenses when the telescope is adjusted for minimum eyestrain?

L = ______ m

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