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Grade 11Modern Physics

The thresholdwavelength for photoelectric emission from a material is 4800 A . Photoelectrons will be emitted when this material is illuminated with monochromatic radiation from:
(1) 40W blue lamp 2) 40W green lamp
(3) 100W red lamp (4)100W yellow lamp

Profile image of moidin afsan
11 Years agoGrade 11
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1 Answer

Profile image of Shubham Singh
11 Years ago
answer is (1) 40W blue lamp

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