A tuning fork having n = 300 Hz produces 5 beats/s with another tuning fork. If impurity (wax) is added on the arm of known tuning fork, the number of beats decreases then calculate the frequency of unknown tuning fork.

Explanation

To solve the problem, we need to determine the frequency of the unknown tuning fork based on the information provided. Here is a step-by-step breakdown of the solution:

### Step 1: Understand the given information
- Frequency of the known tuning fork (n1) = 300 Hz
- Number of beats produced = 5 beats/s
- Frequency of the unknown tuning fork (n2) = x Hz (unknown)

### Step 2: Relate beats to frequency difference
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