According to Einstein's photoelectric equation, the plot of the maximum kinetic energy of the emitted photoelectrons from a metal versus frequency of the incident radiation gives a straight line whose slope

Options

A. depends on the intensity of 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

C

Explanation

(c ) : According to Einstein's photoelectric equation
Maximum kinetic energy, `K_(max)=hu-phi_(0)`
where, h = Planck's constant
u = Frequency of incident light
`phi_(0)` = Work function of a metal
Compare it with the equation of straight line
y = mx + c
we get, slope of the graph = h