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प्रश्न
While investigating which phenomena was Becquerel studying uranium salts when he discovered radioactivity?
पर्याय
Fluorescence and phosphorescence
Chemical reactions of metal salts
Magnetic effects of electric current
Electrical conductivity of gases
MCQ
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उत्तर
Becquerel studied uranium salts while investigating fluorescence and phosphorescence. During this investigation, he observed that a covered photographic plate was still exposed, which could not be explained by ordinary visible light.
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