Ultraviolet light of 6.2 eV falls on aluminium surface (work function = 4.2 eV). The…
Chemistry · JEE Main · NTA Exams — Atomic Structure
Ultraviolet light of 6.2 eV falls on aluminium surface (work function = 4.2 eV). The kinetic energy (in joule) of the fastest electron emitted is :
- 3.2 × 10–21
- 3.2 × 10–19
- 3.2 × 10–17
- 3.2 × 10–15
Answer
(B) 3.2 × 10 –19
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