Atoms And Nuclei Question 137

Question: In the spectrum of hydrogen atom, the ratio of the longest wavelength in Lyman series to the longest wavelength in the Balmer series is [UPSEAT 2004]

Options:

A) 5/27

B) 1/93

C) 4/9

D) 3/2

Show Answer

Answer:

Correct Answer: A

Solution:

In Lyman series $ {\lambda_{\max }}=\frac{4}{3R} $ In Balmer series $ {\lambda_{\max }}=\frac{36}{5R}. $ So required ratio $ =\frac{5}{27} $



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