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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

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

Grade:11

1 Answers

Shubham Singh
199 Points
6 years ago
answer is (1) 40W blue lamp

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