Yellow light is used in a single slit diffraction experiment with slit width of 0.6 mm. If yellow light is replaced by X-rays, then the observed pattern will reveal,

Options

A. That the central maxima is narrower
B. More number of fringes
C. Less number of fringes
D. No diffraction pattern

Answer

To solve the problem, we need to analyze the situation when yellow light is replaced by X-rays in a single slit diffraction experiment.

### Step-by-Step Solution:

1. **Understand the Concept of Diffraction**:
- Diffraction occurs when waves encounter an obstacle or a slit that is comparable in size to their wavelength. The amount of diffraction is significant when the slit width is of the same order as the wavelength of the light being used.

2. **Identify the Wavelength of Yellow Light**:
- Yellow light typically has a wavelength of about 580 nm (nanometers), which is equivalent to 5800 Å (Angstroms).

3. **Identify the Wavelength of X-rays**:
- X-rays have much shorter wavelengths, typically ranging from 1 Å to 100 Å.

4. **Compare the Slit Width to the Wavelength**:
- The slit width given in the problem is 0.6 mm, which is equivalent to 600,000 nm or 60,000 Å.
- Compare this with the wavelength of X-rays (1 Å to 100 Å). The slit width (60,000 Å) is much larger than the wavelength of X-rays.

5. **Conclusion on the Diffraction Pattern**:
- Since the slit width (0.6 mm or 60,000 Å) is much larger than the wavelength of X-rays (1 Å to 100 Å), the condition for significant diffraction is not met.
- Therefore, we conclude that there will be no observable diffraction pattern when X-rays are used.

### Final Answer:
When yellow light is replaced by X-rays in the single slit diffraction experiment, there will be **no diffraction pattern observed**.

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