I have a HSC physics assessment task (Yr 12 Australia) due in a few days where we had to take measurements of the photoelectric effect (VStop, Wave no/length, F) etc with different filters and find an approximation for H, by manipulating different equations etc.(adsbygoogle = window.adsbygoogle || []).push({});

I already found an fairly close approximation (1.7e-34) H=6.626e-34, but i just want to no if my method was right or not.

The work function was found by graphing Kemax against the F (Kemax = QVstop/F). A trend line was extended back to get f (3.6e-34) Approx. An approximation for H was found by getting the gradient of the slope of KEMax + W / F (2e-34). But since excel rounded it a bit i put it in my calculater (H = QVstop + W]/F) and got 1.69e-34

So is that the rite way to do it or is there a better way

Thnx in advance 4 ne comments

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# Homework Help: Finding and approximation for Planck's constant ( H )

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