Page 1 of 1

### photoelectric effect

Posted: Sun Oct 13, 2019 9:00 pm
Which one of following is not describing the photoelectric effect?
A. E (photon) – E (remove e-) = E (excess)

B. E (photon) – E (remove e-) = EK (e-)

C. hv - work function = 1/2mv2

D. λv = c

E. None of the above
I don't understand which of these are not describing the effect and why.

### Re: photoelectric effect

Posted: Sun Oct 13, 2019 9:45 pm
I think D does not describe the photoelectric effect because it instead just describes light going through a medium.

### Re: photoelectric effect

Posted: Sun Oct 13, 2019 9:56 pm
D. λv = c does not describe the photoelectric effect because the photoelectric experiment was designed to measure the how much energy is required to remove an electron from a metal surface and the kinetic energy of the electron, which is described by answers A, B, and C. Answer choice D describes the wavelength and frequency of light.

### Re: photoelectric effect

Posted: Sun Oct 13, 2019 9:56 pm
D. λv = c is the correct answer because it doesn't have to do with the photoelectric effect equation or any of its derivations. The equation shows the relationship between a wave's frequency and wavelength.