Q.
According to Einstein's photoelectric equation, the graph of kinetic energy of the photoelectron emitted from the metal versus the frequency of the incident radiation gives a straight line graph, whose slope
2355
162
Dual Nature of Radiation and Matter
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Solution:
According to Einsteins photoelectric equation Maximum kinetic energy, Kmax=hυ−ϕ0
where, h = Planck’s constant υ= Frequency of incident light ϕ0= Work function of a metal
Compare it with the equation of straight line y=mx+c
we get, slope of the graph = h