Polarized light

Options

A. Is a different form of light
B. Can show interference pattern
C. Travels in any medium with a velocity slightly more than that for unpolarized light
D. Has direction of vibration restricted in some way

Answer

### Step-by-Step Solution:

1. **Understanding Polarized Light**:
- Polarized light is light in which the vibrations of the electromagnetic waves occur in a single plane. This is in contrast to unpolarized light, where the vibrations occur in multiple planes.

2. **Unpolarized Light**:
- Unpolarized light consists of waves vibrating in various directions. For example, natural sunlight is unpolarized as it contains waves oscillating in all possible directions perpendicular to the direction of propagation.

3. **Polarization Process**:
- When unpolarized light passes through a polarizer, it filters the light waves, allowing only those vibrating in a specific direction to pass through. This results in polarized light, where the vibrations are confined to a single plane.

4. **Characteristics of Polarized Light**:
- Polarized light can exhibit interference patterns, which is a characteristic behavior of coherent light sources. Thus, it can show interference effects when combined with other waves.

5. **Direction of Vibration**:
- The key feature of polarized light is that its direction of vibration is restricted. This means that after passing through a polarizer, the light waves no longer vibrate in all directions but are limited to a specific orientation.

6. **Evaluating Options**:
- Given the options in the question:
- Option 1: "It is a different form of light." - This is not a defining characteristic of polarized light.
- Option 2: "It can show interference." - This is correct as polarized light can exhibit interference patterns.
- Option 3: (not provided in the transcript).
- Option 4: "It has direction of vibration restricted in some way." - This is also correct as the vibrations are confined to a single plane.

7. **Conclusion**:
- The correct answers are Option 2 and Option 4.