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UPSC 2010: India-based Neutrino Observatory is included by the Planning Commission as a mega science project under the 11th Five-Year Plan. In this context, consider the following statements: 1. Neutrinos are chargeless elementary particles that travel close to the speed of light. 2. Neutrinos are created in nuclear reactions of beta decay. 3. Neutrinos have a negligible, but non-zero mass. 4. Trillions of Neutrinos pass through human body every second. Which of the statements given above are correct?
(a)1 and 3 only
(b)1, 2 and 3 only
(c)2, 3 and 4
(d)1, 2, 3 and 4
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Not attemptedCorrect Answer: (d) 1, 2, 3 and 4
Neutrinos are neutral leptons that move near light speed, are produced in β-decay reactions, possess a tiny yet non-zero mass (established via oscillation experiments), and solar/cosmic sources create a flux of trillions through each human per second. Hence all four statements are correct. ([gktoday.in](https://www.gktoday.in/analysis-of-upsc-civil-services-2010-gs-paper-part-ii/))
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Frequently Asked Questions
What is the correct answer to this UPSC 2010 Science & Technology question?▼
The correct answer is option (d): 1, 2, 3 and 4. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Physics question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2010, GS Paper 1, as Question 34. It falls under Science & Technology > Physics.
What is the difficulty level of this UPSC question?▼
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
How many UPSC Prelims questions have been asked from Physics?▼
UPSC has asked 104 questions from Physics (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.