In the following figure, there is a triangle of glass in air. Which best shows the refracted ray of light?

Options

A.
B.
C.
D.

Answer

To solve the question regarding the refraction of light in a triangular glass prism, we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Mediums**:
- The triangle is made of glass, which is a denser medium.
- The surrounding medium is air, which is a rarer medium.

2. **Understand the Refraction Process**:
- When light travels from a rarer medium (air) to a denser medium (glass), it bends towards the normal.
- When light travels from a denser medium (glass) to a rarer medium (air), it bends away from the normal.

3. **Draw the Normal Line**:
- At the point where the light ray enters the glass, draw a normal line perpendicular to the surface of the glass.

4. **Determine the Path of the Light Ray**:
- As the light ray enters the glass from air, it will bend towards the normal.
- After traveling through the glass, when it exits back into the air, it will bend away from the normal.

5. **Analyze the Options**:
- Look at each option provided in the question to see which one correctly represents the bending of the light ray as it enters and exits the glass prism.

6. **Select the Correct Option**:
- The correct option will show the light ray bending towards the normal when entering the glass and bending away from the normal when exiting back into the air.

### Conclusion:
After analyzing the options based on the behavior of light in different mediums, the correct answer is **Option 3**, which accurately depicts the refraction of light through the triangular glass prism.

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