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प्रश्न
Who discovered radio waves?
विकल्प
Marconi
Hershell
Newton
Ritter
MCQ
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उत्तर
Marconi
Explanation:
Guglielmo Marconi is credited with the practical discovery and demonstration of radio wave communication. Herschel discovered infrared radiation, Newton worked on visible light, and Ritter discovered ultraviolet radiation.
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