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UPSC Combined Geo-Scientist

Chemist

  • 2 objective papers
  • 120 questions each
  • 2 h per paper
  • 100 + 300 marks

Prelims Paper I covers general studies.

UPSC Combined Geo-Scientist, Prelims · 2026 · Paper I, General Studies · Q113 of 120

Geo-Scientist Prelims 2026 General Studies Q113: In which one of the following regions of electromagnetic spectrum,…

QuestionPhysics / Lasers

In which one of the following regions of electromagnetic spectrum, LASER is most difficult to achieve?

  1. (a) Microwave
  2. (b) Infrared
  3. (c) Visible
  4. (d) Ultraviolet

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