The photoelectric threshold wavelength of silver is 3250 10^ -11 ~m . The velocity of the…
Chemistry · NEET · NTA Exams — Structure of Atom
The photoelectric threshold wavelength of silver is \(3250 \times 10^{-11} \mathrm{~m}\). The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength \(2536 \times 10^{-11} \mathrm{~m}\) is
(Given \(h=4.14 \times 10^{-15} \mathrm{eVs} \text { and } c=3 \times 10^{1} \mathrm{~ms}^{-1}\))
- \(=6 \times 10^{4} \mathrm{~ms}^{-1}\)
- \(=0.6 \times 10^{6} \mathrm{~ms}^{-1}\)
- \(=61 \times 10^{3} \mathrm{~ms}^{-1}\)
- \(=0.3 \times 10^{6} \mathrm{~ms}^{-1}\)
Answer
(B) =0.6 10^ 6 ~ms ^ -1
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