A proton and an electron are accelerated by same potential difference starting from rest have de...

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A proton and an electron are accelerated by same potential difference starting from rest have de-Broglie wavelength \( \lambda_{\mathrm{p}} \) and \( \lambda_{\mathrm{e}} \).
(A) \( \lambda_{\mathrm{e}}=\lambda_{\mathrm{p}} \)
(B) \( \lambda_{e}\lambda_{p} \)
(C) \( \lambda_{\mathrm{e}}\lambda_{\mathrm{p}} \)
(D) none of these.
\( P \)
W.
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