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Question: Answered & Verified by Expert
The frequency of incident light falling on a photosensitive metal plate is doubled, the kinetic energy of the emitted photoelectrons is
PhysicsAtomic PhysicsVITEEEVITEEE 2011
Options:
  • A double the earlier value
  • B unchanged
  • C more than doubled
  • D less than doubled
Solution:
2694 Upvotes Verified Answer
The correct answer is: unchanged
Since, $\lambda_{r}>\lambda_{y}>\lambda_{g}$ the wevelength of red light is greater than threshold wavelength and hence no electrons are emitted.

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