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A proton, a neutron, an electron and alp...

A proton, a neutron, an electron and `alpha`-particle have the same energy. Then their de-Broglie wavelengths compare is

A

(a) `lambda_p=lambda_ngtlambda_egtlambda_alpha`

B

(b) `lambda_alphaltlambda_p=lambda_ngtlambda_e`

C

(c) `lambda_eltlambda_p=lambda_ngtlambda_alpha`

D

(d) `lambda_e=lambda_p=lambda_n=lambda_alpha`

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