When photons of energy $8 \times 10^{-19} \mathrm{~J}$ incident on a photosensitive material, the de Broglie wavelength of the photoelectrons emitted with maximum kinetic energy is $10 Å$. The work function of the photosensitive material is nearly

• Correct answer
  A

  3.5 eV
• B

  2.5 eV
• C

  2.0 eV
• D

  1.5 eV

Hence, the correct answer is option: 'A'.