AP EAMCET202526 May 2025Morning ShiftChemistryStructure of AtomActual
The work function of Cu is 7.68 10⁻¹⁹ ~J . If photons of wavelength 221 nm are made to strike the surface of the metal, the kinetic energy (in J) of the ejected electrons will be ( h =6.63 10⁻³⁴ Js )
Options
- A2.64 10⁻¹⁸
- B1.32 10⁻¹⁹
- C2.64 10⁻¹⁹
- D6.60 10⁻¹⁹
Correct answer
B. 1.32 10⁻¹⁹
Step-by-step solution
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