A recent movie titled The Man Who Knew Infinity is based on the biography of

The correct answer is A, S. Ramanujan. The 2015 film 'The Man Who Knew Infinity' tells the life of the Indian mathematician Srinivasa Ramanujan and is based on Robert Kanigel's 1991 biography of the same name. Ramanujan, born in 1887 at Erode in Tamil Nadu and largely self-taught, wrote to G. H. Hardy at Cambridge in 1913; Hardy brought him to England, where he worked on number theory, infinite series, partitions and continued fractions. He became a Fellow of the Royal Society in 1918 and died in 1920 at just 32. Dev Patel played Ramanujan and Jeremy Irons played Hardy. His birthday, 22 December, is celebrated as National Mathematics Day, and 1729 is known as the Hardy–Ramanujan number. Option B is wrong because S. Chandrasekhar was an astrophysicist known for the Chandrasekhar limit. Option C is wrong because S. N. Bose was the physicist behind Bose–Einstein statistics. Option D is wrong because C. V. Raman won the 1930 Nobel Prize for the Raman effect. Exam tip: Ramanujan — 22 December, National Mathematics Day; 1729, the Hardy–Ramanujan number.