Calculate de-Broglie wavelength when `e^(-)` is accelerated by the following voltage.
(i) `750V` (ii) `300` volt

Explanation

To calculate the de-Broglie wavelength of an electron when it is accelerated by a given voltage, we can use the formula:

\[ \lambda = \frac{150}{\sqrt{V}} \]

where:
- \(\lambda\) is the de-Broglie wavelength in angstroms,
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