The ratio of intensities of two waves is 9 : 25. What is the ratio of their amplitude ?

Explanation

To find the ratio of the amplitudes of two waves given the ratio of their intensities, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the relationship between intensity and amplitude**:
The 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
...