When a photoelectric effect experiment was carried out using a metal "M" and light at wavelength λ1
When a photoelectric effect experiment was carried out using a metal "M" and light at wavelength λ1
, electrons with a kinetic energy of 1.6×10−19 J were emitted. The wavelength was reduced to one-half its original value and the experiment was repeated (still using the same metal target). This time electrons with a kinetic energy of 6.4×10−19 J were emitted. Find the electron binding energy for metal M. (The actual wavelengths used were not recorded, but it is still possible to find the binding energy.)
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