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Grade: 12th pass
        
 A photon of wave length 1240Aostrikes ametal surface ejected a photon electron with kinetic  energy EE1 if work function associated with metal is 4ev
The value of E is
 
10 months ago

Answers : (1)

Arun
22572 Points
							
Dear student
 
wavelength = 1240 A
 
Energy associated = hc/ lambda 
energy will come out as 15.97 * 10^-19 J
 
Work function = 4ev = 6.4 * 10^-19 J
 
KE energy = energy associated- work function = 9.57* 10^-19
 
10 months ago
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