The work functions for metals $A, B$ and $C$ are $1.92 eV, 2.0 eV$ and $5 eV$ respectively. According to Einstein's photoelectric equation,which of these metals will emit photoelectrons for an incident radiation of wavelength $4100 \mathring{A}$?

  • A
    None of these
  • B
    $A$ only
  • C
    $A$ and $B$ only
  • D
    All the three metals

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