What must be the velocity of a beam of electrons if they are to disply a de Broglie wavelength of `100 Å` (mass of electron `= 9.1 xx 10^(-31) kg, h = 6.6 xx 10^(-34) J s`)?

Explanation

To find the velocity of a beam of electrons that displays a de Broglie wavelength of \(100 \, \text{Å}\), we can use the de Broglie wavelength formula:

\[ \lambda = \frac{h}{mv} \]

Where:
- \(\lambda\) is the de Broglie wavelength,
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