- #1

ZedCar

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## Homework Statement

Determine Planck's Constant from gradient

## Homework Equations

## The Attempt at a Solution

I have a graph entitled "Photoelectric effect: stopping voltage as a function of light frequency"

The y-axis is the Stopping Voltage (V), the x-axis the Frequency (Hz).

How do I determine Planck's Constant (h) from the gradient?

Thanks!