Choose the correct statement

Options

A. While watching television by means of an antenna, a passing nearby aeroplane can produce wavering ghost images in the television picture
B. Solar cells are often coated with a transparent thin film, such as silicon monoxide (SIO) to minimize reflective losses.
C. Glass lenses used in cameras and other optical instruments are usually coated with a transparent thin film, such as magnesium fluoride. `(MgF_2)` to reduce or eliminate unwanted reflection
D. All of these

Answer

To solve the question, we need to analyze each of the statements provided in the options and determine their correctness based on principles of wave optics.

### Step-by-Step Solution:

1. **Analyze Option 1**:
- The statement claims that a passing nearby airplane can produce wavering ghost images in the television picture due to interference.
- **Explanation**: This is true because the airplane can reflect or scatter the television signals, leading to interference patterns that can cause ghost images on the screen. Thus, this statement is correct.

2. **Analyze Option 2**:
- The statement discusses solar cells being coated with a transparent thin film like silicon monoxide (SiO) to minimize reflective loss.
- **Explanation**: This is also true. Coating solar cells with a thin film helps in reducing the amount of light that is reflected away, thereby increasing the efficiency of the solar cells. Therefore, this statement is correct.

3. **Analyze Option 3**:
- This statement mentions that glass lenses used in cameras and optical instruments are coated with magnesium fluoride to reduce unwanted reflection.
- **Explanation**: This is a well-known fact in optics. Magnesium fluoride is often used as an anti-reflective coating on lenses to minimize reflection and improve light transmission. Thus, this statement is correct.

4. **Conclusion**:
- Since all three options (Option 1, Option 2, and Option 3) are correct based on the explanations provided, we conclude that the correct answer includes all three statements.

### Final Answer:
All three options (Option 1, Option 2, and Option 3) are correct.

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