In Young's double slit experiment, one slit is covered with red filter and another slit is covered by green filter, then interference pattern will be

Options

A. red
B. green
C. yellow
D. invisible

Explanation

To solve the question regarding the interference pattern in Young's double slit experiment when one slit is covered with a red filter and the other with a green filter, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Setup**: In Young's double slit experiment, two coherent light sources (or slits) produce an interference pattern on a screen. Here, one slit is covered with a red filter and the other with a green filter.

2. **Identifying the Colors**: The light coming from the slit covered with the red filter will be red light, and the light coming from the slit covered with the green filter will be green light.

3. **Analyzing Interference Conditions**: For interference to occur, the light waves from both slits must be coherent and of the same wavelength (or at least within a small range of wavelengths). However, red and green light have different wavelengths and are not coherent with each other.

4. **Complementary Colors**: Red and green are complementary colors. When mixed, they produce white light, but since they are being filtered separately, they do not combine in the same way.

5. **Conclusion on Interference Pattern**: Since the two colors (red and green) are not coherent and do not produce a stable interference pattern, the resulting interference pattern will be invisible. This is because the waves do not overlap in a way that creates distinct interference fringes.

6. **Final Answer**: Therefore, the interference pattern will be invisible.