MCQ
If $\lambda _L, \lambda _M$ and $\lambda _N$ are the wave lengths of electron in $L, M, N$ energy levels of $H-$ atom respectively. What is their decreasing order :
  • A
    $\lambda _L > \lambda _M > \lambda _N$
  • $\lambda _L < \lambda _M < \lambda _N$
  • C
    $\lambda _L > \lambda _M < \lambda _N$
  • D
    $\lambda _L < \lambda _M > \lambda _N$

Answer

Correct option: B.
$\lambda _L < \lambda _M < \lambda _N$
b

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