The wave length of the characteristic \( \mathrm{X} \)-ray \( \math...

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The wave length of the characteristic \( \mathrm{X} \)-ray \( \mathrm{K}_{\alpha} \) line emitted by a hydrogen like atom is \( 0.32 \AA \). The wave length of \( K_{\beta} \) line emitted by the same element is:
\( \mathrm{P} \)
(A) \( 0.18 \ddot{\mathrm{A}} \)
(B) \( 0.48 \ddot{\AA} \)
W
(C) \( 0.27 \mathrm{H} \)
(D) \( 0.38 \mathrm{~A} \)
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