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Question

The threshold wavelength for photoelectric emission from's materials is $$5200 A$$.Photoelectrons will be emitted when this materials is illuminated with monochromatic radiation from a 


A
50W infrared lamp
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B
1W infrared lamp
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C
50W ultraviolet lamp
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D
1W ultraviolet lamp
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Solution

The correct options are
C $$50W$$ ultraviolet lamp
D $$1W$$ ultraviolet lamp
2024364_1229830_ans_0d279372c59340939e8724e53300c64e.jpg

Physics

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