The wavelength \( \lambda_{e} \) of an electron and \( \lambda_{p} \) of a photon of same energy...

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The wavelength \( \lambda_{e} \) of an electron and \( \lambda_{p} \) of a photon of same energy \( E \) are related by
(a) \( \lambda_{p} \propto \sqrt{\lambda_{e}} \)
(b) \( \lambda_{p} \propto \frac{1}{\sqrt{\lambda_{e}}} \)
(c) \( \lambda_{p} \propto \lambda_{e}^{2} \)
(d) \( \lambda_{p} \propto \lambda_{e} \).
 
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