A beam of monochromatic light passes through a liquid and the scattered light contains additional wavelengths different from the incident one. Which scattering does this describe?

1. The defining feature is that scattered light gains frequencies other than the incident frequency. 2. This change in wavelength on interaction with molecules is Raman scattering. 3. It is an inelastic process because incident and scattered energies differ. 4. Rayleigh scattering keeps the wavelength unchanged, so it is ruled out. _Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 2 Optics "Scattering of Light", p.26_