CUET · MATHS · PYQ PAPER 2024
The shortest wavelengths in the hydrogen spectrum, in decreasing order, for spectral series Pfund, Balmer, Brackett, and Lyman are :
- A (A), (B), (C), (D)
- B (A), (C), (B), (D)
- C (B), (A), (D), (C)
- D (A), (C), (D), (B)
Answer & Solution
Correct Answer
(B) (A), (C), (B), (D)
Step-by-step Solution
Detailed explanation
\( \lambda_{min} \propto n_1^2 \) Lyman (\( n_1=1 \)), Balmer (\( n_1=2 \)), Brackett (\( n_1=4 \)), Pfund (\( n_1=5 \)) Decreasing order of shortest wavelength (\( n_1 \)): Pfund > Brackett > Balmer > Lyman. (A), (C), (B), (D)
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