Mht Cet
Waves
MHT CET 2024 3rd May Morning Shift
MCQ+1 / -02024
The pitch of a whistle of an engine appears to drop by $30 \%$ of original value when it passes a stationary observer. If the speed of sound in air is $350 \mathrm{~ms}^{-1}$, then the speed of engine in $\mathrm{ms}^{-1}$ is