Calculate the ratio of two points on a screen in a Young's double - slit experiment if the waves from two coherent sourcres have a phase difference of `phi/3` and `phi/2` respectively.

Explanation

To solve the problem of calculating the ratio of two points on a screen in a Young's double-slit experiment with given phase differences, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Intensity Formula**:
In a Young's double-slit experiment, the resultant intensity \( I \) at a point on the screen due to two coherent sources can be expressed as:
\[
I = I_1 + I_2 + 2\sqrt{I_1 I_2} \cos \phi
...