Ultraviolet radiation of 6.2 eV falls on an aluminium surface (work function 4.2 eV). The kinetic en….

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Ultraviolet radiation of 6.2 eV falls on an aluminium surface (work function 4.2 eV). The kinetic energy of the faster electron emitted is approximately

Options :-

1. 3.2 × 10^-15 J
2. 3.2 × 10^-17 J
3. 3.2 × 10^-19 J
4. 3.2 × 10^-21 J

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