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Question
CBSEENPH12039762

If the series limit frequency of the Lyman series is vL, then the series limit frequency of the Pfund series is:

  • vL/25

  • 25vL

  • 16 vL

  • vL/16

Solution

A.

vL/25

Series limit frequency of the Lyman series is given by
vL = RcZ2112-12νL = RcZ2 ... (1)

Series limit frequency of the Pfund series

vp = RcZ2 152-12vp = vL25