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JEE Main 2023 (Online) 29th January Morning Shift
MCQ+4 / -12023
A person observes two moving trains, 'A' reaching the station and 'B' leaving the station with equal speed of \(30 \mathrm{~m} / \mathrm{s}\). If both trains emit sounds with frequency \(300 \mathrm{~Hz}\), (Speed of sound: \(330 \mathrm{~m} / \mathrm{s}\)) approximate difference of frequencies heard by the person will be: