Molybdenum metal must absorb radiation with a minimum frequency of 1.09 x 10^15 s before it can emit an electron from its surface via the photoelectric effect. if molybdenum is irradiated with light of wavelength of 120 nm, what is the maximum possible kinetic energy of the emitted electrons?

Explanation:

The material is irradiated with light of wavelength

So the energy of the incoming photons is

The threshold frequency for the emission of photoelectrons in the material is

which corresponds to an energy of

Therefore, the maximum possible kinetic energy of the emitted electrons will be equal to the difference between the energy of the incoming radiation and the threshold energy:

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explanation:

it becomes positively charged by charging it