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Question 90Asked in RRB JE CBT-1, 16 Dec 2024, Shift 3 (4:30 PM)

In which of the following scenarios does the focal length of a concave mirror vary?

  1. AWhen placed in a vacuum
  2. BWhen placed in air
  3. CFocal length does not vary in any media
  4. DWhen placed in water
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Correct answer: (C) Focal length does not vary in any media

From RRB JE CBT-1 PYQ 16 Dec 2024, Shift 3 (4:30 PM)

This is question 90 of RRB JE CBT-1 PYQ 16 Dec 2024, Shift 3 (4:30 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.