Question

How to calculate wavelength when stopping potential and work function is given?

Answer 1

We Know that Energy required to eject Electrons is

E = Work function + Stopping Potential

⇒ hν = hν₀ + Stopping potential

we know that c = νλ ⇒ ν =c/λ

substituting we get hc/λ = Work Function + Stopping potential

⇒ λ = $\frac{hc}{Work Function + Stopping Potential}$