Which of the following diagrams correctly rep resents the passage of a ray of light through a concave lens?

Options

A.
B.
C.
D.

Answer

To determine which diagram correctly represents the passage of a ray of light through a concave lens, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Nature of a Concave Lens**:
- A concave lens is a diverging lens, meaning it causes parallel rays of light to spread out (diverge) after passing through it.

2. **Identify the Direction of Incoming Light**:
- The ray of light is assumed to be coming parallel to the principal axis of the lens.

3. **Focus of the Concave Lens**:
- The focus (F) of a concave lens is virtual and located on the same side as the incoming light. This means that the rays appear to diverge from this point.

4. **Analyze Each Diagram**:
- **Diagram 1**: Shows rays converging at a focus on the opposite side. This is incorrect because a concave lens does not converge light.
- **Diagram 2**: Shows a parallel ray diverging after passing through the lens, with the rays appearing to come from the focus on the same side as the incoming light. This is correct.
- **Diagram 3**: Indicates no deviation of the ray. This is incorrect because rays passing through the optical center do not deviate, but the question specifies a ray parallel to the axis.
- **Diagram 4**: Shows rays converging to a focus on the opposite side. This is also incorrect for the same reason as Diagram 1.

5. **Conclusion**:
- The only diagram that correctly represents the passage of a ray of light through a concave lens is **Diagram 2**.

### Final Answer:
- The correct diagram is **Diagram 2**.