Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).
Prominent ScientistsProminent Scientists of the World
Who invented bifocal spectacles?
- A.Benjamin FranklinCorrect answer
- B.Thomas Edison
- C.Galileo Galilei
- D.Isaac Newton
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Practice these MCQs in the appQuick fact: Bifocal spectacles were invented by Benjamin Franklin.