Photoelectric Effect: What is the longest wavelength of light that can cause photoelectron emission from a metal that has a work function of 2.20 eV? (1 eV = 1.60 × 10-19 J, c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)

A. 417 nm
B. 257 nm
C. 344 nm
D. 565 nm
E. 610 nm


Answer: D

Physics & Space Science

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