A source of sound of frequency 512 Hz is moving towards a huge reflector-wll, with a velocity of 10 m/s. Velocity of sound in air = 330 m/s. How many beats per second will be heard by an observer standing between the source and the wall?

A source of sound of frequency 512 Hz is moving towards a huge reflect

1.	A source of sound of frequency 512 Hz is moving towards a huge reflector-wll, with a velocity of 10 m/s. Velocity of sound in air = 330 m/s. How many beats per second will be heard by an observer standing between the source and the wall?
Answer» Solution :No BEAT is heard. It is because the FREQUENCY received by the listener directly from the SOURCE and that received on reflection from WALL is same. Frequency does not change by reflection. Each frequency received = `(512xx330)/(330-10)Hz=528Hz`