A proton and an electron have same kinetic energy. Which one has greater de-Broglie wavelength and why ?

Explanation

To solve the problem of comparing the de-Broglie wavelengths of a proton and an electron with the same kinetic energy, we can follow these steps:

### Step 1: Understand the de-Broglie wavelength formula
The de-Broglie wavelength (λ) is given by the formula:
\[ \lambda = \frac{h}{\sqrt{2mK}} \]
where:
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