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State PCS PYQPrelims 2025

BPSC – Combined Competitive Examination · Question 124

In which medium is the speed of sound maximum?

  1. Steel
  2. Water
  3. Air
  4. Hydrogen
Show answer & explanation

Answer: (A) Steel

Explanation

Sound is fastest in solids, then liquids, then gases; steel is the fastest medium here.

  • (A) Correct

    Correct: sound travels fastest in solids like steel (~5000–6000 m/s).

  • (B) Incorrect

    Wrong: about 1500 m/s, slower than steel.

  • (C) Incorrect

    Wrong: about 343 m/s, the slowest here.

  • (D) Incorrect

    Wrong: about 1270 m/s, still slower than steel.