Electrons are ejected from a metallic surface with speeds ranging up to 4.4 105 m/s when...

Question

Question

Electrons are ejected from a metallic surface with speeds ranging up to 4.4 105 m/s when light with a wavelength of λ = 630 nm is used.

(a) What is the work function of the surface? ______eV

(b) What is the cutoff frequency for this surface? _________Hz

Answer 1

Answer #1

+1 mev レ -31 x lo 0 12.ev uf 6.63 x1o-31

Answer 2

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