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प्रश्न
What happened to high-voltage sparks across the detector loop when the emitter plate was illuminated with ultraviolet light from an arc lamp?
विकल्प
They became positive ions.
They were enhanced.
They escaped from the metal surface.
They absorbed energy from incident radiation.
MCQ
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उत्तर
Hertz observed that high-voltage sparks across the detector loop were enhanced. This occurred when ultraviolet light from an arc lamp illuminated the emitter plate.
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