Who invented bifocal eyeglasses?
Correct answer: B. Benjamin Franklin
- A. Ibn-e-Haitem
- B. Benjamin Franklin
- C. Archemedes
- D. None
Explanation
Benjamin Franklin invented bifocal spectacles in the 18th century by combining lenses for distance and near vision in one pair. Ibn al-Haytham made important contributions to optics but did not invent bifocals.
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