Question 10 on Quiz 1 Preparation Fall 2013 in the Workbook

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Katie Clark 3B
Posts: 26
Joined: Fri Sep 25, 2015 3:00 am

Question 10 on Quiz 1 Preparation Fall 2013 in the Workbook

Postby Katie Clark 3B » Thu Oct 15, 2015 6:35 pm

I have reworked question 10 and still cannot get the correct answer. The question reads, "If molybdenum is irradiated with light of wavelength of 294 nm, what is the maximum possible kinetic energy of the emitted electrons?". I got the correct answer for the first part of the question, "what is the minimum energy needed to produce this effect?". I then said set the kinetic energy equal to the energy of the photon minus the work function. Can someone explain what I'm doing wrong? Thanks!

Serena Zhang 3D
Posts: 28
Joined: Fri Sep 25, 2015 3:00 am

Re: Question 10 on Quiz 1 Preparation Fall 2013 in the Workb

Postby Serena Zhang 3D » Thu Oct 15, 2015 10:21 pm

I think what you are doing is correct, although in my workbook the wavelength provided is 194nm. I'm not sure if 294nm was a typo or if you miswrote the number in your calculations, in which case that should fix it!


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