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KCET2024PhysicsDual Nature of Matter

The photoelectric work function for photo metal is 2.4 eV . Among the four wavelengths, the wavelength of light for which photoemission does not take place is

Options

  1. A200 nm
  2. B300 nm
  3. C700 nm
  4. D400 nm

Correct answer

C. 700 nm

Step-by-step solution

Given, ₀=24 eV We know that, ₀= 1240 ₀( in nm ) ₀( in nm )= 1240 ₀ = 1240 24 =516.6 ~nm

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