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Question

What is the velocity of sound in air at 61 C? (the velocity of sound in air at 0 C=330 m s1)
  1. 367.21 m s1
  2. 405.28 m s1
  3. 663.40 m s1
  4. 292.79 m s1


Solution

The correct option is A 367.21 m s1
Velocity of sound in air is related to temperature as:
v=v0+(0.61×t C)
where v0 is the velocity of sound in air at 0 C=330 m s1 (given)
Given:
t=61 C
v=330+(0.61×61)
v=330+37.21
v=367.21 m s1

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