Does a photon have a de-Broglie wavelength ? Explain.

Explanation

To determine whether a photon has a de Broglie wavelength, we can follow these steps:

### Step 1: Understand de Broglie Wavelength
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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