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प्रश्न
Which is an example associated with photoelectric emission?
विकल्प
A heated filament in vacuum tubes
Sharp metal tips in special electronic devices
Photoelectric cells and light sensors
Positive ions pulling electrons inward
MCQ
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उत्तर
Photoelectric cells and light sensors are examples associated with photoelectric emission. In this process, suitable light can cause electrons to leave a metal surface.
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