Question

If the difference between the frequencies of two tuning forks is n number of beats produced in two seconds are a)n b)2n c) 3n ?

Answer 1

Answer is `(b)` `2n`.

Explanation:

Number of beats produced in one second is equal to the difference between the frequencies of the two tuning forks.

As this difference is `n`, we have `n` beats produced by forks each second

and in `2` seconds, we will have `2n` beats.

Hence, answer is `(b)` `2n`.