1.

In a photoelectric effect experiment the threshold wavelength of light is 380 nm. If the wavelength of incident light is 260 nm, the maximum kinetic energy of emitted electrons will be:Given E (in eV) \(=\frac{{1237}}{{\lambda {\rm{\;}}\left( {in{\rm{\;}}nm} \right)}}\)

A. 1.5 eV
B. 3.0 eV
C. 4.5 eV
D. 15.1 eV
Answer» B. 3.0 eV


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