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Wave Optics
Question
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In photoelectric emission process from a metal of work function 1.8 eV, the kinetic energy of most energetic electrons is 0.5 eV. The corresponding  stopping potential is

  • 1.3 V

  • 0.5 V

  • 2.3 V 

  • 1.8 V 

Answer

B.

0.5 V

stopping potential = Maximum KE
eV = KEmax

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