A proton, a neutron, an electron and a \( \alpha \)-particle have same energy. If \( \lambda_{p}...

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A proton, a neutron, an electron and a \( \alpha \)-particle have same energy. If \( \lambda_{p}, \lambda_{n}, \lambda_{e} \) and \( \lambda_{\alpha} \) are the de-Broglies wavelengths of proton, electron and an \( \alpha \)-particle respectively, then choose the correct relation from the following
(a) \( \lambda_{p}=\lambda_{n}\lambda_{e}\lambda_{\alpha} \)
(b) \( \lambda_{\alpha}\lambda_{p}=\lambda_{n}\lambda_{e} \)
(c) \( \lambda_{e}\lambda_{p}=\lambda_{n}\lambda_{\alpha} \)
(d) \( \lambda_{e}=\lambda_{p}=\lambda_{n}=\lambda_{\alpha} \)
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