Who among the following discovered change in the wavelength of light that occurs when a light beam is deflected by molecules?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → C. V. Raman
When light passes through a substance, a small part of it is scattered by the molecules with a changed wavelength. This is the Raman effect, discovered by C. V. Raman on 28 February 1928, the day now observed as National Science Day in India. It won him the Nobel Prize in Physics in 1930.