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ECAT Physics QUESTION #738
Question 1
At what temperature the velocity of sound is doubled than as that of at 10°C:
  • 859°C✔️
  • 560°C
  • 760°C
  • 500°C
Correct Answer Explanation
v ∝ √T. For v to double: T2 = 4T1. T1 = 10+273 = 283K; T2 = 4x283 = 1132K = 859°C.