In the rotational-vibrational spectrum of an idealized carbon monoxide (CO) molecule, ignoring rotational-vibrational coupling, two transitions between adjacent vibrational levels with wavelength λ₁ and λ₂. correspond to the rotational transition from J' = 0 to J" = 1 and J' = 1 to J" = 0 respectively. Given that the reduced mass of CO is 1.2 ×^-26 kg, equilibrium bond length of CO is 0.12 nm and vibrational frequency is 5 × 10¹³ Hz, the ratio of \(\frac{\lambda_1}{\lambda_2} \) is closest to