Question

Yn = 4 Sin (400 rt) and y2 = 3 Sin (404 mt) are the
equation of displacements of two progressive waves
interfering at x = 0. The frequency of variation of
amplitude at x = 0 for the interfered wave will be
(1) 1
(2) 2
(3) 3
(4) 4​

Answer 1

Answer:

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Answer 2

Answer:

Explanation:

Answer is option 1 here first I have calculated beat frequency. Then I have divided the beat frequency by 2. Cause formula to calculate frequency of variation of amplitude is beat frequency/2 as you can see it in the solution which l have provided. Thank you happy learning