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The work function of a substance is 4.0 eV. Then longest wavelength of light that can cause photoelectron emission from this substance approximately (A) 540 nm (B) 400 nm (C) 310 nm (D) 220 nm

The work function of a substance is 4.0 eV. Then longest wavelength of light that can cause photoelectron emission from this substance approximately (A) 540 nm (B) 400 nm (C) 310 nm (D) 220 nm

Grade:12

2 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
2 years ago
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Vikas TU
14149 Points
2 years ago
Dear student 
For A Certain Metal Surface, The Longest Wavelength Of Light That Will Produce Photoelectrons Is 300nm.

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