Ultraviolet radiations of 6.2 eV falls on an aluminium surface (work function 4.2 eV)…

Physics · JEE Advanced · NTA Exams — Atoms and Nuclei

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

Answer

(B) 3.2 × 10 –19

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