What is the ratio of wavelength λ1/λ2 in the given figure of energy levels of a molecule

5 : 1 1 : 4 2 : 3 6 : 1

6 : 1

$ \lambda = \frac{hc}{\Delta E} $ $ \lambda_1 = \frac{hc}{-E-(-5E/3)} = \frac{hc}{2E/3} = \frac{3hc}{2E}$ $ \lambda_2 = \frac{hc}{-E-(-5E)} = \frac{hc}{4E} = \frac{hc}{4E}$ $\frac{\lambda_1}{\lambda_2} = \frac{\frac{3hc}{2E}}{\frac{hc}{4E}}= 6:1$