Post Module Assessment #25

Moderators: Chem_Mod, Chem_Admin

Esther Ahn 4I
Posts: 30
Joined: Fri Sep 28, 2018 12:29 am

Post Module Assessment #25

Postby Esther Ahn 4I » Wed Oct 17, 2018 2:54 am

Photoelectric experiments gave rise to a new equation relating the energy of light to its frequency. Select the right equation.

A. λv = c
B. Ek = mv2/2
C. mv2/2 = hv - φ
D. E = hv
E. None of the above

I put C as my answer, but this was incorrect. Can someone tell me the correct answer and why that is the correct answer?

Hanlin Zhu 4G
Posts: 30
Joined: Fri Sep 28, 2018 12:28 am

Re: Post Module Assessment #25

Postby Hanlin Zhu 4G » Wed Oct 17, 2018 8:18 am

I think it might be D, because E=hv=hc/λ is connecting v, the frequency, with the energy of the photon.

Tamera Scott 1G
Posts: 65
Joined: Fri Sep 28, 2018 12:27 am

Re: Post Module Assessment #25

Postby Tamera Scott 1G » Wed Oct 17, 2018 3:34 pm

I agree, E=hv has both energy, (E) and frequency (v) in the equation, so it solidifies their relationship.


Return to “Photoelectric Effect”

Who is online

Users browsing this forum: No registered users and 2 guests