Scientists & Inventions Part-2

Total Questions: 30

11. The fourth dimension in Physics was introduced by: [Uttarakhand P.C.S. (Pre) 2007]

Correct Answer: (b) Einstein
Solution:The fourth dimension can refer to time as another dimension, along with length, width, and depth. This idea of time as a fourth dimension is usually attributed to the 'Theory of Special Relativity' proposed in 1905 by Albert Einstein.

12. Sir C.V. Raman received the Nobel Prize for physics in the year: [42nd B.P.S.C. (Pre) 1997]

Correct Answer: (b) 1930
Solution:

Sir C.V. Raman received the Nobel Prize for Physics in 1930. His award was for his groundbreaking work on the scattering of light, specifically the discovery of the "Raman effect". This effect, now named after him, explains how some of the light that is deflected when traversing a transparent material changes in wavelength. 

13. An eminent Indian physicist Dr. C.V. Raman was given the Nobel Prize for his work in the year: [Uttarakhand U.D.A/L.D.A. (Pre) 2007]

Correct Answer: (b) 1930
Solution:

Sir C.V. Raman received the Nobel Prize for Physics in 1930. His award was for his groundbreaking work on the scattering of light, specifically the discovery of the "Raman effect". This effect, now named after him, explains how some of the light that is deflected when traversing a transparent material changes in wavelength. 

14. The National Science Day is observed on February 28 every year to commemorate: [U.P. P.C.S. (Pre) 2006 ,U.P. U.D.A/L.D.A. (Pre) 2006 ,U.P. P.C.S. (Pre) 1993]

Correct Answer: (a) Raman-effect day
Solution:

National Science Day in India is observed on February 28th annually to commemorate the discovery of the Raman Effect by physicist C.V. Raman in 1928.

This discovery, for which Raman later received the Nobel Prize in Physics in 1930, is celebrated to acknowledge scientific achievements and promote awareness of science and its role in daily life.

15. 'The National Science Day' is observed on: [Uttarakhand P.C.S. (Mains) 2006]

Correct Answer: (b) February 28
Solution:National Science Day in India is observed on February 28th annually to commemorate the discovery of the Raman Effect by physicist C.V.Raman in 1928.

16. India celebrates the National Science Day on: [U.P. P.C.S. (Mains) 2016]

Correct Answer: (c) February 28
Solution:

India celebrates National Science Day on February 28th each year. This day commemorates the discovery of the Raman Effect by physicist Sir C.V. Raman. The National Council for Science and Technology Communication recommended that February 28th be declared National Science Day.

17. Which scientist's birthday is celebrated as the 'National Science Day'? [M.P.P.C.S. (Pre) 2006]

Correct Answer: (c) C.V. Raman
Solution:

National Science Day in India is celebrated every year on February 28th

This day commemorates the discovery of the Raman Effect by the renowned Indian physicist Sir C.V. Raman on February 28, 1928. For this groundbreaking discovery in the field of light scattering, Sir C.V. Raman was awarded the Nobel Prize in Physics in 1930.

Therefore, the scientist whose birthday is not celebrated as National Science Day, but whose discovery day is, is Sir C.V. Raman. His birthday falls on November 7th.

18. Whose birth centenary was celebrated in the year 1988? [U.P.P.C.S. (Pre) 1991]

Correct Answer: (d) C.V. Raman
Solution:
  • Charles Darwin (February 12, 1809 - April 19, 1882)
  • Ramanujan (December 22, 1887 - April 26, 1920)
  • Einstein proposed the theory of relativity in 1905.
  • C.V. Raman (November 7, 1888 - November 21, 1970)

Thus, in 1988, the birth centenary of C.V. Raman was celebrated.

19. A recent movie titled The Man Who Knew Infinity is based on the biography of: [I.A.S. (Pre) 2016]

Correct Answer: (a) S. Ramanujan
Solution:The Man Who Knew Infinity is a 2015 British biographical drama based on the 1991 book of the same name by Robert Kanigel. The film stars Dev Patel as Srinivasa Ramanujan, a mathematician who became a pioneer in mathematical theories after gaining admission to Cambridge University.

20. Who among the following scientists propounded the New Theory of Relativity? [U.P. P.C.S. (Mains) 2016]

Correct Answer: (a) J.V. Narlikar
Solution:J.V. Narlikar propounded the 'new theory of relativity'. In collaboration with Fred Hoyle, he proposed this theory by amending Einstein's Theory of Relativity.