Question

What is meant by beats? Derive a formula for beat frequency of two waves.​

Answer 1

Answer:

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Beat is a word linked to sound waves. The beat frequency is not anything but the difference in frequency of two wave. It is because of the constructive and destructive interferences. When two sound waves of dissimilar frequency approach your ear, the alternating productive and damaging interference causes the sound to be alternatively loud and soft – a phenomenon which is termed as “beating” or producing beats. The beat frequency is equivalent to the complete value of the alteration in frequency of the two waves. The count of beats per second is equivalent to the difference in frequency. Conferring to these interferences, sound will be loud or soft. Actually, the beat frequency is the complete value of the difference in wave frequencies. 

Answer 2

Explanation:

the phenomenon in which when two sound waves of nearly equal frequencies travelling along the same direction superimpose on each other the intensity of the resultant wave at a given point in the medium becomes maximum and minimum periodically is called beats