[raffster2]

The problem asks whether the velocity of electrons emitted from an Na photocell would increase or decrease if the wavelength of the emitted light went from 435 (wavelength of indigo) to 405 (wavelength of Violet).

Since the wavelength decreases, the frequency increases, which would make the E in E=hv decrease, therefore decreasing the velocity. Is this right? Because the solution says Ek indigo < Ek Violet.

[Astrokel]

Since the wavelength decreases, the frequency increases, which would make the E in E=hv decrease,

v is frequency, it increases as wavelength decreases so E should increase.

[raffster2]

Ohh. okay I think i understand.  The reason why I was confused is because it's a multiple part question, and the previous part had the wavefunction in the equation, so i subtracted hv from E, instead of dividing by v.  Since they were both electrons of Na, the wavefunction is the same, so it is omitted from the equation and it's only E=hv.  Is that right?

[Astrokel]

so i subtracted hv from E, instead of dividing by v

Eh  Do you mean from Einstein's photoelectric equation?

[raffster2]

work function, i mean, the thing with a phi

[Astrokel]

Sorry, i don't quite get you. I understand what a wavefunction is but i do not know what you meant by omitted from the equation. What equation? Photoelectric equation? Or perhaps if you really need help you can post the whole question here.