________frequency, is the minimum frequency required to eject an electron when photons hit the metal surface.(a) Required(b) Activated(c) Threshold(d) LimitingThe question was posed to me in final exam.I need to ask this question from Developments Leading to the Bohr’s Model of Atom in chapter Structure of Atom of Chemistry – Class 11

________frequency, is the minimum frequency required to eject an elect

1.	________frequency, is the minimum frequency required to eject an electron when photons hit the metal surface.(a) Required(b) Activated(c) Threshold(d) LimitingThe question was posed to me in final exam.I need to ask this question from Developments Leading to the Bohr’s Model of Atom in chapter Structure of Atom of Chemistry – Class 11
Answer» The correct choice is (C) Threshold Explanation: In the photoelectric effect, when PHOTONS strike on a metal surface, it emits electrons. Thus for emitting an electron, it requires a minimum AMOUNT of ENERGY. This is threshold energy acquired through threshold frequency.

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