Wave Optics

In Young's double slit experiment, the \(10^{\text {th }}\) maximum of wavelength '\(\lambda_1\)' is at a distance of '\(Y_1\)' from the central maximum. When the wavelength of the source is changed to '\(\lambda_2\)', \(5^{th}\) maximum is at a distance '\(Y_2\)' from the central maximum. The ratio \(\frac{Y_1}{Y_2}\) is