Mht Cet Biology
Waves
MHT CET (PCB) 2024 22th April Morning Shift
MCQ+1 / -02024
The pitch of whistle of an engine appears to drop by $30 \%$ of the original value when it passes a stationary observer. If speed of sound in air is $350 \mathrm{~m} / \mathrm{s}$, then the speed of engine in $\mathrm{m} / \mathrm{s}$ is