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                                    If a photocell is illuminated with a radiation of 1240 A∘, then stopping potential is found to be 8 V . The work function of the emitter and the threshold wavelength are | 
                            
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Answer»  If a photocell is illuminated with a radiation of 1240 A∘, then stopping potential is found to be 8 V . The work function of the emitter and the threshold wavelength are  | 
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