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If the Work Function of Thoriated Tungsten Is 4 ×\times 10-19 J,the Longest Wavelength of Light That Will Cause Photoelectrons

Question 52

Multiple Choice

If the work function of thoriated tungsten is 4 ×\times 10-19 J,the longest wavelength of light that will cause photoelectrons to be emitted is approximately


A) 880 nm
B) 400 nm
C) 495 nm
D) 700 nm
E) 181 nm

Correct Answer:

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