The ratio of intensitics duc to upper and lower slits on the screen of a Young's double-slit experiment is 16:9. Find the ratio of maximum to average intensity on screen.

Explanation

To solve the problem, we need to find the ratio of maximum intensity to average intensity in a Young's double-slit experiment given the intensity ratio of the upper and lower slits.

### Step-by-Step Solution:

1. **Understanding the Given Information:**
We are given the ratio of intensities from the upper and lower slits as:
\[
I_1 : I_2 = 16 : 9
...