Wed December 28, 2011 By: Sunny Acharjee

what is beat?

Expert Reply
Wed December 28, 2011
When two sound waves of slightly different frequencies , travelling in a medium along the same direction , superimpose on each other, the intensity of the resultant sound at a particular position rises and falls regularly with time. this phenomenon of regular variation in the intensity of sound with time at a particular position , when two sound waves of nearly equal frequencies superimpose on each other is called beats.
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