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i know that f=c/λ
so i re arranged part of the eqn and got v=h (c/λ) / e

idk what to do from here
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2. (Original post by pizzaqueenx)
i know that f=c/λ
so i re arranged part of the eqn and got v=h (c/λ) / e

idk what to do from here
V = hc/λe

V = (hc/e)(1/λ)

Compare this to the equation of a straight line: y = mx + c

y-axis = V, the gradient, m = (hc/e) and x-axis = 1/λ

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