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Electron, Photon, Photo-electric Effect and X-Rays — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsElectron, Photon, Photo-electric Effect and X-Rays1 Mark
MCQ
Photons of energy $6 \mathrm{eV}$ are incident on a metal surface whose work function is $4 \mathrm{eV}$. The minimum kinetic energy of the emitted photoelectrons will be
  • ✓
    $0 \mathrm{eV}$
  • B
    $1 \mathrm{eV}$
  • C
    $2 \mathrm{eV}$
  • D
    $10 \mathrm{eV}$
✓

Answer

Correct option: A.
$0 \mathrm{eV}$
Minimum kinetic energy is always zero.

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