2001 General Studies, all questions
UPSC Prelims 2001 · General Studies
Question 108: Science and Technology
Who is the scientist in whose honour the “Chandra” X-ray telescope has been named?
aChandrasekhar Venkat Raman
bJagdish Chandra Bose
cPrafulla Chandra Roy
dSubrahmanyan Chandrasekhar
AnswerThe answer is (d).
The Chandra X-ray Observatory, launched by NASA in 1999, is named after Subrahmanyan Chandrasekhar, the Indian-born American astrophysicist who shared the 1983 Nobel Prize in Physics. He showed that a white dwarf star cannot exceed about 1.4 solar masses, the Chandrasekhar limit. C. V. Raman won the Nobel Prize in 1930 for the Raman effect.
Why each option is right or wrong
- (a) C. V. Raman won the 1930 Nobel Prize for the Raman effect.
- (b) J. C. Bose worked on plant physiology and radio waves.
- (c) P. C. Ray was a chemist and founder of Bengal Chemicals.
- (d) Right: Subrahmanyan Chandrasekhar.
Explanation: written by UPSC Grade, not by UPSC.
Source: UPSC, Civil Services (Preliminary) Examination 2001, General Studies. UPSC's own paper isn't online; the words are from a published compilation. The paper on upsc.gov.in.