Question: 7) If the threshold frequency required for photoelectron emission is 400 Tetra Hz: 2 a) What is the work function? 5 b) If the surface

7) If the threshold frequency required for photoelectron emission is 400 Tetra Hz: 2 a) What is the work function? 5 b) If the surface is illuminated by light with a wavelength of 500 nm, what is the speed of the escaping electrons

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