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Question 52Asked in RRB ALP CBT-1, 13 Feb 2026, Shift 1 (9:00 AM)

During the propagation of sound in air, rarefaction is the region where:

  1. Aparticles are very close
  2. Bdensity is minimum
  3. Cwavelength becomes zero
  4. Dpressure is high
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Correct answer: (B) density is minimum

From RRB ALP CBT-1 PYQ 13 Feb 2026, Shift 1 (9:00 AM)

This is question 52 of RRB ALP CBT-1 PYQ 13 Feb 2026, Shift 1 (9:00 AM). 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.