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

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Solution:

According to Einsteins photoelectric equation Maximum kinetic energy,
where, = Planck’s constant
= Frequency of incident light
= Work function of a metal
Compare it with the equation of straight line

we get, slope of the graph =