[Q4] 1051 The visible range of an electromagnetic wave spans between 350 nm and 750 nm,...

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[Q4] 1051 The visible range of an electromagnetic wave spans between 350 nm and 750 nm, which falls on a metallic surface. The work function for this metallic surface is 2.15 eV. Find the spectral range (in nm) that will successfully eject photoelectrons from the metallic surface. [Q4] 1051 The visible range of an electromagnetic wave spans between 350 nm and 750 nm, which falls on a metallic surface. The work function for this metallic surface is 2.15 eV. Find the spectral range (in nm) that will successfully eject photoelectrons from the metallic surface.