The photoelectric threshold wavelength for potassium (work function being 2 eV) is (Take…
Chemistry · NEET · NTA Exams — Structure of Atom
The photoelectric threshold wavelength for potassium (work function being 2 eV) is
(Take, \(h=6.6 \times 10^{-34} \downharpoonleft 5\))
- 310 nm
- 620 nm
- 1200 nm
- 2100 nm
Answer
(B) 620 nm
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