CJWilson7591 CJWilson7591
  • 09-01-2024
  • Physics
contestada

Sodium and copper have work functions 2.3eV and 4.5eV respectively. Then the ratio of their threshold wavelengths is nearest to
A 1 : 2
B 4 : 1
C 2 : 1
D 1 : 4

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