Which of the following is//are correct?

1.	Which of the following is//are correct?
Answer» Solution :(a) velocity of SOUND wave in air independent of pressure if `T =` constant (b)`NU = sqrt((GAMMA RT)/(M)) = sqrt((gammaR(t + 273))/(M))` or `nu^(2) prop (t + 273)` (c ) `nu = sqrt(T//mu)` `:. nu prop sqrt(T)` or `nu^(2) prop T` (d) `f_(o) = (nu)/(2l)` or `(nu)/(4l)` `rArr f_(o) prop (1)/(l)`

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