(adsbygoogle = window.adsbygoogle || []).push({}); [SOLVED] Potential Difference argh ....

1. The problem statement, all variables and given/known data

What is the minimum potential difference that must be applied across an X-ray tube to observe a line of frequency 1.61x10^16Hz

2. Relevant equations

OK well we can define potential difference as the amount of energy required to emit this X-ray yeah?

3. The attempt at a solution

[tex]

\begin{array}{l}

E = hf \\

= \left( {6.63 \times 10^{ - 34} } \right)\left( {1.61 \times 10^{16} } \right) \\

= 1.07 \times 10^{ - 17} J \\

\end{array}

[/tex]

But I thought that potential difference was measured in volts?

Just need clarification here

Thanks

Steven

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# Homework Help: Potential Difference argh

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