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Physics Medium PPSC Uploaded: 17 Aug 2026

The speed of sound in air at room temperature is approximately:

  • A 343 m/s
  • B 5000 m/s
  • C 3 x 10^8 m/s
  • D 1500 m/s
Correct Answer: Option A — 343 m/s
Explanation:
The speed of sound in dry air at approximately 20 degrees Celsius room temperature is about 343 metres per second, and this speed increases ...
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