Photoelectric EffectEasy
Question
Light of wavelength 0.6 μm from a sodium lamp falls on a photocell and causes the emission of photoelectrons for which the stopping potential is 0.5 V, with light of wavelength 0.4 μm from a mercury vapour lamp, the stopping potential is 1.5 V, then the work function in electron volts, of the photocell surface is :
Options
A.0.75 eV
B.1.5 eV
C.3 eV
D.2.5 eV
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