Question

who is sir CV RAMAN????????????

Answer 1

Here is your answer:
Sir Chandrasekhara Venkata Raman was an Indian physicist.

Answer 2

C.V. Raman, in full Sir Chandrasekhara Venkata Raman, (born November 7, 1888, Trichinopoly, India—died November 21, 1970, Bangalore), Indian physicist whose work was influential in the growth of science in India. He was the recipient of the Nobel Prize for Physics in 1930 for the discovery that when light traverses a transparent material, some of the light that is deflected changes in wavelength. This phenomenon is now called Raman scattering and is the result of the Raman effect.