Draw a neat and labelled diagram of an experimental setup of Young.s double slit experiment to study the interference of light and show that:
`beta= (lambdaD)/(d)`
Where the terms have their usual meaning. Show intensity variation in the interference pattern graphically.

Explanation

### Step-by-Step Solution:

1. **Understanding the Setup**:
- Young's double slit experiment consists of a coherent light source that illuminates two closely spaced slits, S1 and S2. The light passing through these slits creates an interference pattern on a screen placed at a distance D from the slits.

2. **Drawing the Diagram**:
- Draw a horizontal line to represent the screen.
- Mark two vertical lines for the slits, S1 and S2, with a distance 'd' between them.
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