The correct answer is CV Raman.

• 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."
  • Chandrasekhara Venkata Raman was an Indian physicist known mainly for his work in the field of light scattering.
  • With his student K. S. Krishnan, he discovered that when light traverses a transparent material, some of the deflected light changes wavelength and amplitude.
  • He was the first Asian person to receive a Nobel Prize in any branch of science.

• Meghnad Saha was an Indian astrophysicist who developed the Saha ionization equation, used to describe chemical and physical conditions in stars.
  • His work allowed astronomers to accurately relate the spectral classes of stars to their actual temperatures.
  • He was elected to the Parliament of India in 1952.
• Satyendra Nath Bose was an Indian mathematician and physicist specialising in theoretical physics.
  • He is best known for his work on quantum mechanics in the early 1920s, collaboration with Albert Einstein in developing the foundation for Bose-Einstein statistics and the theory of the Bose-Einstein condensate.
• Birbal Sahni was an Indian paleobotanist who studied the fossils of the Indian subcontinent.
  • He also took an interest in geology and archaeology.
  • He founded what is now the Birbal Sahni Institute of Palaeobotany at Lucknow in 1946.