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Engineering

2 months ago

Light of wavelength λl = 350 nm and λ2 = 540 nm is incident one by one on a metal plate. The ratio of maximum speed of ejected photoelectron is v1 : v2 = 2 : 1. Determine the work function of metal

(1) 1.2 eV (2) 1.9 eV (3) 5.6 eV (4) 2.5 eV

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