What is the effect on the interference pattern in Young's double slit experiment if following operations are performed?

Options

A. Screen is moved away from the plane of slits
B. The separation between the slits is decreased
C. The separation between the slits is increased
D. Red light is replaced by blue light

Explanation

To analyze the effect on the interference pattern in Young's double slit experiment when certain operations are performed, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Setup**:
- In Young's double slit experiment, we have two slits separated by a distance \(d\) and a screen placed at a distance \(D\) from the slits. The interference pattern is formed on the screen due to the superposition of light waves coming from the two slits.

2. **Fringe Width Formula**:
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