Asked by Anon

A metal foil has a threshold frequency of 5.45 x 10^14 Hz. Which color of visible light will not eject electrons from this metal?

a) blue
b) indigo
c) violet
d) orange

c=(wavelength)(v)

3.0x10^8m/s = (wavelength)(5.45 x 10^14 Hz)

550 nm -> releases green. So, I am guessing the answer would be d) orange.
Answered by DrBob222
I agree
Answered by ornelle
this wrong. the answer is Green, Blue, Indigo and violet
Answered by anon
^nope, the tutor was in fact correct. blue, green, violet, and indigo ARE ejected. Orange, is not ejected. Read the question carefully, "which will NOT eject electrons."
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