Question

According to Einsteins 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

• A. depends on the intensity of the incident radiation.
• B. depends on the nature of the metal and also on the, intensity of incident radiation.
• C. is same for all metals and independent of the intensity of the incident radiation.
• D. depends on the nature of the metal.

Answer 1

Answer: (C)

is same for all metals and independent of the intensity of the incident radiation.

According to Einsteinss photoelectric equation Maximum kinetic energy,
$K_{max}=h\upsilon -{\varphi }_0$
Where, h = plancks constant
$\upsilon$ = Frequency of incident light
${\varphi }_0$ = Work function of a metal
Compare it with the equation of straight line
$y=mx+c$
we get, slope of the graph = h