The work function of a metal is 4.2 eV. If radiations of 2000 Å fall on the metal. then…
Chemistry · JEE Advanced · NTA Exams — Atomic Structure
The work function of a metal is 4.2 eV. If radiations of 2000 Å fall on the metal. then the kinetic energy of the fastest photoelectron is
- 1.6 × 10–19 J
- 16 × 1010 J
- 3.2 × 10–19 J
- 6.4 × 10–10 J
Answer
(C) 3.2 × 10 –19 J
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