Photoelectric Effect Module #34b


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Lauryn Shinno 2H
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Joined: Fri Sep 28, 2018 12:24 am

Photoelectric Effect Module #34b

Postby Lauryn Shinno 2H » Sat Oct 13, 2018 6:46 pm

How do you solve this? Molybdenum metal must absorb radiation with a minimum frequency of 1.09 x 10^15 s-1 before it can emit an electron from its surface. b. If molybdenum is irradiated with 194 nm light, what is the maximum possible KE of the emitted electrons?

Samantha Kwock 1D
Posts: 61
Joined: Fri Sep 28, 2018 12:24 am

Re: Photoelectric Effect Module #34b

Postby Samantha Kwock 1D » Sat Oct 13, 2018 7:47 pm

The minimum frequency needed to be absorbed by molybdenum metal can be converted into energy using E=hv. This energy is the same as the metal's threshold energy. Similarly, the 194 nm of light can be converted into energy using the E=hv equation, this is the energy of the light photon. The maximum kinetic energy of the electron is equal to the energy of the light minus the threshold energy.


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