Question

What are beats? Prove mathematically that the beat frequency is equal to the
difference in frequencies of the two superposing waves.​

Answer 1

Answer:

The beat frequency refers to the rate at which the volume is heard to be oscillating from high to low volume. The beat frequency is always equal to the difference in frequency of the two notes that interfere to produce the beats. When two waves of similar frequencies interfere, the result is a beat frequency. follow me then jee questions means be

Answer 2

Answer:

when two of nearly same frequencies travelling with same speed in the same direction superpose and produce BEATS.

f1=asin(ωt-kx) - along +ve x direction

f2=asin(ωt+kx) - along +ve x direction

y=f1-f2

apply sinA-sinB formula ,u will get the equation of resultant wave(beats).