12 What is your observation when two source are emitting

Last updated: 6/4/2023

12 What is your observation when two source are emitting sound with frequency 499 Hz 501 Hz Frequency of 500 Hz is heard with change in intensity takes place twice 2 Frequency of 500 Hz is heard with change in intensity takes place Once 3 Frequency of 2Hz is heard with change in intensity takes place Once 4 Frequency of 2Hz is heard with change in intensity takes place twice