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प्रश्न
What happened at the illuminated plate in Lenard's experiment?
विकल्प
The plate gradually lost its negative charge through a gold-leaf electroscope
Electrons were emitted from the illuminated plate
The plate stopped all current while ultraviolet light fell on it
Electrons were emitted from the collector plate when light was removed
MCQ
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उत्तर
The illuminated emitter plate released electrons when ultraviolet light fell on it. These emitted electrons are photoelectrons.
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