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  9. Q300

RRB Group D (Level-1 posts) 2025 · Question 300 of 386

The main reason an echo is NOT heard clearly in a small room is:

  1. ASound intensity decreases too quickly over short distances
  2. BTime interval between original sound and echo is too shortCorrect
  3. CSound frequency is too high
  4. DSound travels too slowly

Answer: B. Time interval between original sound and echo is too short

Official answer key verified. Detailed explanation coming soon.

Source: RRB Group D 2024 Question Paper PDF (Dec 27, 2025) (Shift 2) · official-answer-key

← Q299View full paper (386 questions)Q301 →

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