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Question 109Asked in DSSSB TGT Computer Science, 25 Jun 2023, Shift 2 (12:30 PM)

Which phenomenon causes a phase shift in the retardation plates?

  1. APhasor plates
  2. BRetardation plates
  3. CPolaroid filters
  4. DDouble refraction
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Correct answer: (D) Double refraction

Explanation

Retardation (wave) plates are made of birefringent crystals. Double refraction splits light into ordinary and extraordinary rays that travel at different speeds, and this produces the phase difference between them.

From DSSSB TGT Computer Science PYQ, 25 Jun 2023, Shift 2 (12:30 PM)

This is question 109 of DSSSB TGT Computer Science PYQ, 25 Jun 2023, Shift 2 (12:30 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.