The correct answer is Scattering. The Nobel Prize in Physics 1930 was awarded to Sir Chandrasekhara Venkata Raman for his work on the scattering of light and for the discovery of the effect named after him.Scattering of Light If the molecules of a medium, after absorbing incoming radiations, emit them in all possible directions, the process is called scattering. Rayleigh has shown that the intensity of scattered light is inversely proportional to the fourth power of wavelength (or directly proportional to the fourth power of frequency).Additional Information Facts About Dr. C V Raman:Name: Dr. Chandrashekhra Venkataraman or C.V. RamanBorn on: 7 November 1888Place of Birth: Tiruchirappalli, Tamil NaduFather's Name: R. Chandrashekhara AiyerMother's Name: Parvathi AmmalSpouse Name: Lokasundari AmmalDied on: 21st November 1970Place of Death: Bangalore, IndiaDiscovery: Raman EffectAwards: Matteucci Medal, Knight Bachelor, Hughes Medal, Nobel Prize in Physics, Bharat Ratna, Lenin Peace Prize, Fellow of the Royal Society.