1. Tardigrade
  2. Question
  3. Physics
  4. The light photons of energy 1 eV and 3 eV respectively are made incident on a metallic plate of work function 0.5 eV one after the other. Find the ratio of maximum kinetic energy of photoelectrons emitted by them:

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Q. The light photons of energy $1 eV$ and $3 eV$ respectively are made incident on a metallic plate of work function $0.5 eV$ one after the other. Find the ratio of maximum kinetic energy of photoelectrons emitted by them:

Dual Nature of Radiation and Matter

Solution:

$\frac{ E _{ k _{1}}}{ E _{ k _{2}}}=\frac{ hv _{1}-\phi}{ hv _{2}-\phi_{2}}$
$=\frac{1-0.5}{3-0.5}$
$\frac{0.5}{2.5}=\frac{1}{5}$