Physics · Dual Nature of Matter and Radiation
The work function of a substance is 4.0 eV. The longest wavelength of light that can cause photoelectron emission from this substance is approximately:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1220 nm
- 2540 nm
- 3400 nm
- 4310 nm✓
Correct answer
310 nm
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