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Electron, Photon, Photoelectric Effect and X-Rays — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectron, Photon, Photoelectric Effect and X-Rays1 Mark
MCQ
The work function for metals A, B and C are respectively 1.92 eV, 2.0 eV and 5 eV. According to Einstein’s equation, the metals which will emit photo electrons for a radiation of wavelength 4100 Å is/are
  • A
    None of these
  • B
    A only
  • ✓
    A and B only
  • D
    All the three metals
✓

Answer

Correct option: C.
A and B only
A and B only

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