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Topic

Cosmic rays

Asked 2 times in CSE over 27 years (1985–2012), peaking in 1985.
2
PYQs
1
Exams
2
Years active
1985–2012
Span
1985
Peak
2/2
Answers
📅 Full chronological timeline →

Key insights

  • Most tested in CSE — 2 of 2 PYQs
  • Most asked in 1985
  • Recurs across 2 years (1985–2012)

Across exams

CSE · 2

How the concept evolved

185
112
Largely a pre-2016 idea — watch for a comeback.

Sample questions

You've seen the pattern — here are a few of the actual PYQs.
CSE2012
Electrically charged particles from space travelling at speeds of several hundred km/sec can severely harm living beings if they reach the surface of the Earth. What prevents them from reaching the surface of the Earth?
  1. A The Earth's magnetic field diverts them towards its poles ✓
  2. B Ozone layer around the Earth reflects them back to outer space
  3. C Moisture in the upper layers of atmosphere prevents them from reaching the surface of the Earth
  4. D None of the statements (a), (b) and (c) given above is correct
✓ Correct answer: (A)
Science & Technology › Physics & Chemistry
CSE1985
Mesons are found in
  1. A Xrays
  2. B Cosmic rays ✓
  3. C frays
  4. D None of the above
✓ Correct answer: (B)
Science & Technology › Physics & Chemistry

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