In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where M = molecular weight of the gas) ?
Correct answer: A. 1/√M
- A. 1/√M
- B. √M
- C. 1/M
- D. M
Explanation
For an ideal gas, the isentropic sound speed is proportional to √(γRT/M). With temperature and γ fixed, this gives a dependence of 1/√M.
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