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

Explanation

To determine which particle, a proton or an electron, has a greater de-Broglie wavelength when both have the same kinetic energy, we can follow these steps:

### Step 1: Understand the de-Broglie wavelength formula
The de-Broglie wavelength (\( \lambda \)) is given by the formula:
\[ \lambda = \frac{h}{p} \]
where \( h \) is Planck's constant and \( p \) is the momentum of the particle.
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