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Dual Nature of Radiation and Matter — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsDual Nature of Radiation and Matter1 Mark
MCQ
In the photoeletric effect, electrons are emitted:
  • A
    At a rate that is proportional to the amplitude of the incident radiation.
  • B
    With a maximum velocity proportional to the frequency of the incident radiation.
  • C
    At a rate that is independent of the emitter.
  • D
    Only if the frequency of the incident radiations is above a certain threshold value.
✓

Answer

  1. Only if the frequency of the incident radiations is above a certain threshold value.

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