Two waves of the same pitch have amplitudes in the ratio 1 : 3. What will be the ratio of their :
intensities and

Explanation

To solve the problem of finding the ratio of the intensities of two waves with given amplitudes, we can follow these steps:

### Step 1: Understand the relationship between amplitude and intensity
Intensity (I) of a wave is directly proportional to the square of its amplitude (A). This can be expressed mathematically as:
\[ I \propto A^2 \]

### Step 2: Define the amplitudes
Let the amplitude of wave 1 be \( A_1 \) and the amplitude of wave 2 be \( A_2 \). According to the problem, the ratio of their amplitudes is given as:
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