In a YDSE, the central beight fringe can be indentified:

Options

A. as it has greater intensity than the other bright fringes
B. as it wider than the other bright fringes
C. as it is narrower than the other bright fringes.
D. by using while light instead of single wave-length light.

Answer

To solve the question regarding the identification of the central bright fringe in Young's Double Slit Experiment (YDSE), we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Young's Double Slit Experiment (YDSE)**:
- In YDSE, when coherent light passes through two closely spaced slits, it creates an interference pattern on a screen. This pattern consists of alternating bright and dark fringes.

2. **Identifying the Central Bright Fringe**:
- The central bright fringe (also known as the central maximum) occurs directly opposite the midpoint between the two slits. It is the point where the path difference between the light waves from the two slits is zero.

3. **Effect of Using White Light**:
- If we use white light instead of monochromatic (single wavelength) light, the central maximum will still appear bright. This is because all colors of light (red, green, blue, etc.) constructively interfere at this point due to having the same path length.

4. **Observation of Other Fringes**:
- As we move away from the central maximum, different colors will start to spread out due to their different wavelengths. This results in colored fringes on either side of the central maximum.

5. **Conclusion**:
- Thus, the central bright fringe can be identified as white light when using white light in the experiment, while the other fringes will display a spectrum of colors.

### Final Answer:
The central bright fringe can be identified as white light when using white light in Young's Double Slit Experiment.