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Question 43

In which of the following, the density of the core remains constant from the center to the edges?

  1. ASingle mode fiber
  2. BMultimode step-index fiber
  3. CMultimode graded-index fiber
  4. DSingle mode step-index fiber
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Correct answer: (B) Multimode step-index fiber

Explanation

In a multimode step-index fiber, the core has the same density (refractive index) everywhere, with a sudden step at the cladding. In graded-index fiber the density changes gradually.

From DSSSB TGT Computer Science Practice Set 5

This is question 43 of DSSSB TGT Computer Science Practice Set 5. 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.