What was Bell's invention, the photophone, used for? - Practice (English) | ObjectiveMcq

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What was Bell's invention, the photophone, used for? - Practice (English) | ObjectiveMcq

PracticeLeadersAlexander Graham BellWhat was Bell's invention, the phot...

Alexander Graham Bell LeadersEasy

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What was Bell's invention, the photophone, used for?

Correct Answer:

(B) Sound Transmission through Light

Explanation:

Sound Transmission through Light

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