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AP EAMCET202421 May 2024Evening ShiftChemistryStructure of AtomActual

If ₀ and are respectively the threshold wavelength and wavelength of incident light, the velocity of photo electrons ejected from the metal surface is

Options

  1. A2 h m ( ₀- )
  2. B2 h c m ( ₀- ₀ )
  3. C2 h c m ( ₀- )
  4. D2 h c m ( 1 ₀ - 1 )

Correct answer

B. 2 h c m ( ₀- ₀ )

Step-by-step solution

According to Eistein's equation of photoelectric effect. aligned & h v=h v₀+K E & 1 2 m v^2=h (v-v₀ )= h c - h c ₀ & or, v^2= 2 h c m ( 1 - 1 ₀ ) & v= 2 h c m ( ₀- ₀ ) aligned

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