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Exam (elaborations)
OCR A A-Level Exploring Physics Experiments
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---8May 20242023/2024A+
- OCR A A-Level Exploring Physics 
Experiments 
Demonstrating the photoelectric effect with the gold-leaf electroscope - correct 
answersMETHOD/OBSERVATIONS: 
-Charged rod is placed on top plate, repelling the gold leaf 
-When visible light or UV light is shone on a positively charged plate nothing happens, 
or if visible light is shone on a negatively charged plate 
-But if UV light is shone on a negatively charged zinc gold plate the gold leaf falls 
ANALYSIS: 
-The metal plate loses its neg...
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