Question

1. When two sound waves of slightly different frequencies fi and f2 are sounded together, then the time interval between successive maxima is (A)
$\frac{1}{?f1 + f2}$
(B)
$\frac{1}{f1?} + \frac{1}{f2?}$
(C)
$\frac{1}{?f1} - \frac{1}{?f2}$
(D)
$\frac{1}{f1 - f2?}$
​

Answer 1

Answer:

This is not in my standard

Answer 2

The answer will be
A

Mark me in brain list please