A proton, a neutron, an electron and an \( \alpha \)-particle \( \m...

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A proton, a neutron, an electron and an \( \alpha \)-particle
\( \mathrm{P} \)
have same energy. Then, their de-Broglie
W
wavelengths are as:
(1) \( \lambda_{\mathrm{p}}=\lambda_{\mathrm{n}}\lambda_{\mathrm{e}}\lambda_{\alpha} \) (2) \( \lambda_{\alpha}\lambda_{\mathrm{p}}=\lambda_{\mathrm{n}}\lambda_{\mathrm{e}} \)
(3) \( \lambda_{\mathrm{e}}\lambda_{\mathrm{p}}=\lambda_{\mathrm{n}}\lambda_{\alpha} \) (4) \( \lambda_{\mathrm{e}}=\lambda_{\mathrm{p}}=\lambda_{\mathrm{n}}=\lambda_{\alpha} \)
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