Question

At a place the speed of sound of frequency 300Hz is V. At the same place the speed of 150 Hz sound will be

Answer 1

Since, medium does not change, the temperature of the medium does not change, pressure does not change, the velocity of sound should remain unchanged and will remain V. When frequency of the soundwave changes from 300Hz to 150Hz, the wavelength of the sound wave will double from it's original value when frequency was 300Hz, and velocity of sound shall be still V as before.