Question
Write Einstein's photoelectric equation and explain each term used in it.
✓
Answer
Einstein's Photoelectric Equation :
$ E_{k}=hv-W $
Where $ hv $ = Energy of photon incident on metal surface in
which $ h $= Planck's constant, and $ v $= frequency of the photon
$ W $= Work function of the metal
$ E_{k} $= Maximum kinetic energy of emitted photo-electron.
The above equation can also be written in the following form:
$ \frac{1}{2}mv_{max}^{2}=h(v-v_{0}) $
where $m$ = mass of the emitted photoelectron, $ V_{max} $ = maximum velocity of emitted photoelectron, $ v_{0} $= Threshold frequency of the metal; $ v $= frequency of incident photon; and $h$ = Planck's constant.
$ E_{k}=hv-W $
Where $ hv $ = Energy of photon incident on metal surface in
which $ h $= Planck's constant, and $ v $= frequency of the photon
$ W $= Work function of the metal
$ E_{k} $= Maximum kinetic energy of emitted photo-electron.
The above equation can also be written in the following form:
$ \frac{1}{2}mv_{max}^{2}=h(v-v_{0}) $
where $m$ = mass of the emitted photoelectron, $ V_{max} $ = maximum velocity of emitted photoelectron, $ v_{0} $= Threshold frequency of the metal; $ v $= frequency of incident photon; and $h$ = Planck's constant.
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