a metal whose work function is 4.2 eV is irradiated by radiation whose wavelength is 2000 Armstrong. find the maximum kinetic energy of emitted electron
Answers
Answered by
17
According to question
Given that
work function = 4.2 eV
We know
Planks Constant
hf = 6.63 X 10^-34
And Also
Minimum Kinetic Energy
Ek = hf - work function
= 6.63 X 10^-34 - 4.2 eV
= 2.43 J
Thus the minimum Kinetic Energy is 2.43 J
Given that
work function = 4.2 eV
We know
Planks Constant
hf = 6.63 X 10^-34
And Also
Minimum Kinetic Energy
Ek = hf - work function
= 6.63 X 10^-34 - 4.2 eV
= 2.43 J
Thus the minimum Kinetic Energy is 2.43 J
Answered by
5
The maximum kinetic energy of emitted electron is
Explanation:
It is given that,
The work energy of a metal,
Wavelength of the radiation,
According to Einstein's photoelectric equation,
So, the maximum kinetic energy of emitted electron is . Hence, this is the required solution.
Learn more :
Einstein's equation of photoelectric effect
https://brainly.in/question/10797281
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