Choose the incorrect one form the following in case of a pinhole camera .

Options

A. It works on the principle of rectilinear propagation of light .s
B. If the size of hole is decreased , then the image formed is blurred.
C. If the size of hole is increased , then the image becomes blurred due to super - position of light .
D. Pinhole camera is also known as camera obsure (dark chamber ).

Explanation

**Step-by-Step Solution:**

1. **Understanding Pinhole Camera**: A pinhole camera is a simple camera without a lens and other complex features. It consists of a dark chamber with a small hole (the pinhole) on one side through which light enters.

2. **Principle of Operation**: The pinhole camera operates on the principle of rectilinear propagation of light, meaning that light travels in straight lines. When light passes through the pinhole, it projects an inverted image of the outside scene onto the surface opposite the pinhole.

3. **Evaluating the Options**:
- **Option 1**: "It works on the principle of rectilinear propagation of light." - This statement is true.
- **Option 2**: "If the size of the hole is decreased, then the image won't be colored." - This statement is incorrect. When the size of the hole is decreased, the image becomes clearer and more defined, not colorless.
- **Option 3**: "If the size of the hole is increased, then the image becomes blurred due to superposition of light." - This statement is true. A larger hole allows more light from different angles to enter, leading to a blurred image.
- **Option 4**: "Pinhole camera is also known as camera obscura." - This statement is true. The term "camera obscura" means "dark chamber" in Latin, which accurately describes the pinhole camera.

4. **Conclusion**: After evaluating all options, the incorrect statement is option 2: "If the size of the hole is decreased, then the image won't be colored."