Two sound waves of frequencies 100 Hz and 102 Hz have equal amplitude A and interfere. A stationary detector responds only when the resultant amplitude is at least A. During 12 s, find the total time for which the detector is active.

Physics · Wave Motion

JEE Mains Practice

Two sound waves of frequencies 100 Hz and 102 Hz have equal amplitude A and interfere. A stationary detector responds only when the resultant amplitude is at least A. During 12 s, find the total time for which the detector is active.