Question:

Which of the following is an optically active substance?

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Quartz is commonly used in polarimetry due to its optical activity.
Updated On: Mar 26, 2025
  • Calcite
  • Tourmaline
  • Quartz
  • Sodium Chloride
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The Correct Option is C

Solution and Explanation

An optically active substance rotates the plane of polarized light. Quartz is known for its natural optical activity, while calcite and tourmaline only exhibit birefringence.
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