Physics electron volts and photon energy (physics, G8, Gymnasium Bavaria, grade 10)?
Hey everyone, I urgently need to improve my physics grade, so I've volunteered to present the following problems tomorrow. Problem: I just realized that I think my proposed solution is incorrect, since the problem asked for a result in joules, not eV. Here's the problem:
My idea was this:
So my question is: Could someone give me the solution and workaround for the first subtask so that I can solve the others?
Addition: How do I solve this with a different exponent (eg to the power of minus 21)?
Thank you in advance
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(a) 1eV = 1*1.6*10^-19 J (where e is in it;)
(b) Your bill is fine
For wavelength: W=h*f or W=h*c/lambda, W in Joules.
So this also fits, even though Joule isn't right now as a result?
V is J/C, multiplied by C of the elementary charge e results in J (Joule)