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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 · 2023 · Paper I, General Studies · Q72 of 120

Geo-Scientist Prelims 2023 General Studies Q72: Reverberation of sound ensures

QuestionSound / acoustics

Reverberation of sound ensures

  1. (a) a single refraction
  2. (b) a single reflection
  3. (c) multiple reflections
  4. (d) multiple refractions

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