Work function of lithium and copper are respectively 2.3 eV and 4.0 eV . Which one of the…
Physics · JEE Advanced · NTA Exams — Atoms and Nuclei
Work function of lithium and copper are respectively 2.3 eV and 4.0 eV. Which one of the metal will be useful for the photoelectric cell working with visible light ?
(h = 6.6 × 10–34 J-s, c = 3 × 108 m/s)
(h = 6.6 × 10–34 J-s, c = 3 × 108 m/s)
- Lithium
- Copper
- Both
- None of these
Answer
(A) Lithium
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