Question:medium

The threshold wavelength of tungsten is \(2300\,\text{\AA}\). If ultraviolet light of wavelength \(1800\,\text{\AA}\) is incident on it, then the maximum kinetic energy of photoelectrons would be about:

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Use wavelengths in directly with \(hc=12400\,\text{eV\AA}\).
Updated On: Mar 24, 2026
  • \(1.49\,\text{eV}\)
  • \(2.2\,\text{eV}\)
  • \(3.0\,\text{eV}\)
  • \(5.0\,\text{eV}\)
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The Correct Option is A

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