What is the maximum kinetic energy of photoelectrons ejected from the metal under the influence
| July 3, 2021 | education
What is the maximum kinetic energy of photoelectrons ejected from the metal under the influence of photons 8 * 10v-19J, if the work function is 2 * 10v-19J.
To find the value of the maximum kinetic energy of the photoelectrons under consideration, we apply the formula: Eph = Avykh + Ek, whence we express: Ek = Ef – Avykh.
Values of variables: Eph – energy of photons (Eph = 8 * 10 ^ -19 J); Avykh – work function (Avykh = 2 * 10 ^ 19 J).
Calculation: Ek = Eph – Avih = 8 * 10-19 – 2 * 10 ^ -19 = 6 * 10 ^ -19 J or 600 ZJ.
Answer: The maximum kinetic energy of the photoelectrons under consideration is 600 sJ.
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