The ratio of longest wavelength lines in the Balmer and Paschen series of hydrogen spectrum is
- $\frac{5}{36}$
- $\frac{7}{20}$
- $\frac{7}{144}$
- $\frac{5}{27}$
Solution
On dividing Eq. (B) by Eq. (A), we get $\frac{\lambda_{B L}}{\lambda_{P L}}=\frac{7}{20}$
Asked in: AP EAMCET 2015