Two idential speakers emit sound waves of frequency 660Hz uniformly in all directions. The audio output of each speaker is lmW and the speed of sound in air. A point P is a distance 2m from one speaker and 3m frorr the other. If they are driven coherently but out of phase by 180°. the intensity at the point .P. is:

Two idential speakers emit sound waves of frequency 660Hz uniformly in

1.	Two idential speakers emit sound waves of frequency 660Hz uniformly in all directions. The audio output of each speaker is lmW and the speed of sound in air. A point P is a distance 2m from one speaker and 3m frorr the other. If they are driven coherently but out of phase by 180°. the intensity at the point .P. is:
Answer» `55.3 MU W//m^(2)` `2.2 muW//m^(2)` `28.7 muW//m^(2)` `6.3 muW//m^(2)` ANSWER :B

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