Given below are two statements.
Statement I To hear different beats, difference of frequencies of two sources should be less than 10 .
Statement II More the number of beats more is the confusion.
In the above statements, choose the correct options given below.
Text Solution
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According to the property of persistence of hearing, the impression of a sound heard persists on our mind for 
s. So, in order to hear distinct beats the time interval between the two successive beats should be greater than 
s. Thus, the difference between two frequencies must be less than 10. Also, the number of beats per second gives the difference of frequencies. So, more the number of beats, lesser would be the confusion. Therefore, option is correct.
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