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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 · 2025 · Paper I, General Studies · Q5 of 120

Geo-Scientist Prelims 2025 General Studies Q5: When white light propagating in air passes through a glass prism,…

QuestionOptics / dispersion

When white light propagating in air passes through a glass prism, it splits into a band of colours referred to as the white light spectrum. This phenomenon is called the dispersion of light. Among the following colours, the angle of deviation will be the highest in

  1. (a) yellow
  2. (b) green
  3. (c) orange
  4. (d) red

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