Physics - Sound Wave Question with Solution | TestHub

A whistle giving out$450 \mathrm{Hz}$approaches a stationary observer at a speed of$33 \mathrm{m} {\mathrm{s}}^{-1}$. The frequency heard by the observer (in$\mathrm{Hz}$) is (Speed of sound =$330 \mathrm{m} {\mathrm{s}}^{-1}$)