COMEDK · Physics · 27. Dual Nature of Matter
Emission of electrons from a metal plate illuminated with monochromatic electromagnetic radiation will always take place provided
- A The radiation is sufficiently intense
- B The work function of the plate is less than the energy of a single photon and the plate is uncharged
- C The plate is positively charged
- D The plate is negatively charged
Answer & Solution
Correct Answer
(B) The work function of the plate is less than the energy of a single photon and the plate is uncharged
Step-by-step Solution
Detailed explanation
According to Einstein's photoelectric equation, the kinetic energy of an emitted photoelectron is given by \(K_{max} = h\nu - \Phi\), where \(h\nu\) is the energy of the incident photon and \(\Phi\) is the work function of the metal. For emission to occur, the energy of the…
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