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प्रश्न
What did Crookes suggest in 1879 about cathode rays?
विकल्प
They consisted of streams of low-speed positively charged particles.
They were oil droplets carrying an integral multiple of an elementary charge.
They were emitted only when metals were irradiated with ultraviolet light.
They consisted of streams of fast-moving negatively charged particles.
MCQ
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उत्तर
In 1879, Crookes suggested that cathode rays were streams of fast-moving negatively charged particles. Thomson later confirmed this idea.
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