Enter the work function of the metal body (J) into the calculator to determine the Threshold Frequency.
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Threshold Frequency Formula
The following formula is used to calculate a threshold frequency.
f0 = E / h
- Where fo is the threshold frequency
- E is the work function
- h is planck’s constant (6.62607004 × 10-34 m2 kg / s)
To calculate the threshold frequency, divide the work function by Planck’s constant.
What is a threshold frequency?
A threshold frequency is defined as the minimum frequency of radiation towards a piece of metal that will create a photoelectric effect.
How to calculate threshold frequency?
The following example outlines how to calculate the threshold frequency of a piece of metal.
First, determine the work function of the metal. In this example, the work function is found to be 1.25 * 10 ^- 31
Next, the final and last step is to use the formula above to calculate the threshold frequency.
f0 = E / h
f0 = 1.25 * 10 ^- 31 / 6.62607004 × 10^-34
f0 = 188.684 hz