Attempt any THREE :
Show that beats frequency is equal to frequency difference between two interfering waves.

Explanation

To show that the beats frequency is equal to the frequency difference between two interfering waves, we can follow these steps:

### Step 1: Define the two waves
Let the two waves be represented as:
- Wave 1: \( y_1 = A \sin(\omega_1 t) \)
- Wave 2: \( y_2 = A \sin(\omega_2 t) \)

Here, \( A \) is the amplitude of the waves, \( \omega_1 \) and \( \omega_2 \) are the angular frequencies of the two waves.
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