Electrons are ejected from a metallic surface with speeds ranging up to 3.90x10^5 m/s when light...

Question

Question

Electrons are ejected from a metallic surface with speeds ranging up to 3.90x10^5 m/s when light with a wavelength of λ= 705 nm is used.

1.Find the work function of the surface in units of eV.

(A) 1.33 (B) 2.67 (C) 3.86 (D) 4.38 (E) 5.38

2.Find the cutoff frequency for this surface (in units of 10^14 Hz).

(A) 1.33 (B) 2.67 (C) 3.21 (D) 4.38 (E) 5.38

Answer 1

Answer #1

Answer 2

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