JEE Main 202126 Aug, Morning shiftPhysicsMediumOscillations and Waves185× since 2002
A source and a detector move away from each other in absence of wind with a speed of 20 m/s with respect to the ground. If the detector detects a frequency of 1800 Hz of the sound coming from the source, then the original frequency of source considering speed of sound in air 340 m/s will be ............... Hz.