On illuminating a metal surface by 8.5 × 10^14 Hz, the emitted- electron’* maximum kinetic energy is 0.52 eV.

Question 1

On illuminating a metal surface by 8.5 × 1014 Hz, the emitted- electron’* maximum kinetic energy is 0.52 eV. For the same surface on illuminating with light of frequency 12.0 × 1014 Hz, the maximum kinetic energy of photoelectrons is 1.97 eV. Find out the work function of the metal.

Question 2

(\therefore) (\phi) = (3.52 - 0.52)eV = 3eV

On illuminating a metal surface by 8.5 × 10^14 Hz, the emitted- electron’* maximum kinetic energy is 0.52 eV.

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On illuminating a metal surface by 8.5 × 10^14 Hz, the emitted- electron’* maximum kinetic energy is 0.52 eV.

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