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  9. Q52

TNPSC Group-I 2021 · Question 52 of 148

A rock containing the fluorescing calcite is illuminated by ultraviolet light. Then, the colour of the rock seems to be ________.

Physics - Light

  1. AViolet
  2. BBlue
  3. CGreen
  4. DRedCorrect

Answer: D. Red

Explanation

Calcite commonly fluoresces red to orange when illuminated with ultraviolet light.

Source: TNPSC Group-I Prelims (held 3 Jan 2021) - official paper via examrace.com

← Q51View full paper (148 questions)Q53 →

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