(C) According to Einstein's photoelectric equation,the maximum kinetic energy $(K.E_{max})$ of the ejected photoelectrons is given by: $K.E_{max} = hv

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The maximum energy of the photoelectrons is $hv$.

(C) According to Einstein's photoelectric equation,the maximum kinetic energy $(K.E_{max})$ of the ejected photoelectrons is given by: $K.E_{max} = hv - W$,where $h$ is Planck's constant,$v$ is the frequency of incident light,and $W$ is the work function of the metal.Option $A$ is correct because if $v Option $B$ is correct as the photoelectric effect is an instantaneous process.Option $D$ is correct because $K.E_{max}$ depends only on the frequency of the incident light,not its intensity.Option $C$ is incorrect because the maximum kinetic energy is $hv - W$,not $hv$.

Class 12 Physics Dual Nature of Radiation and matter Einstein's Photoelectric Equation and Energy Quantum of Radiation

Medium

Photoelectrons are ejected from a metal when light of frequency $v$ falls on it. Pick out the wrong statement from the following:

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A
No electrons are emitted if $v$ is less than $W/h$,where $W$ is the work function of the metal.
B
The ejection of the photoelectrons is instantaneous.
C
The maximum energy of the photoelectrons is $hv$.
D
The maximum energy of the photoelectrons is independent of the intensity of the light.

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Dual Nature of Radiation and matter

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Einstein's Photoelectric Equation and Energy Quantum of Radiation

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Photoelectrons are ejected from a metal when light of frequency $v$ falls on it. Pick out the wrong statement from the following:

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