113. A light ray strikes a flat piece of glass at an angle of incidence 60° The index of refraction of the glass is 1.5. The thickness of the glass is 2 cm. Trace the light ray until it emerges from the glass. 60 Air Glass

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**Title:** Understanding Refraction: Light Passing Through Glass

**Introduction:**
This educational resource explores the behavior of light as it strikes a flat piece of glass. We will examine how the light ray bends when entering and exiting the glass, using the principles of refraction.

**Text Description:**
A light ray strikes a flat piece of glass at an angle of incidence of 60 degrees. The index of refraction for the glass is 1.5, and the thickness of the glass is 2 cm. We will trace the path of the light ray until it emerges from the glass.

**Diagram Explanation:**
The diagram illustrates a light ray approaching a flat surface separating air from glass. The incident light ray makes an angle of 60 degrees with the normal (a dashed line perpendicular to the surface).

1. **Incident Ray:** The ray in the air approaching the glass at a 60-degree angle.
   
2. **Normal Line:** The dashed line perpendicular to the surface of the glass, forming a reference for measuring angles.

3. **Refraction:** As the light ray enters the glass, it bends towards the normal line due to the change in speed caused by the glass's higher refractive index (1.5).

4. **Emerging Ray:** After traveling through the glass for 2 cm, the light ray exits the glass, bending away from the normal. Its path outside the glass can be traced using the same angle relationships and Snell’s Law.

**Concepts Covered:**
- **Angle of Incidence:** 60 degrees.
- **Refractive Index:** 1.5 for the glass.
- **Snell’s Law:** Used to determine the angle of refraction as the light enters and exits the glass.
  
This example demonstrates the bending of light as it moves between different media, a fundamental concept in optics, crucial for understanding lenses, prisms, and various optical technologies.
Transcribed Image Text:**Title:** Understanding Refraction: Light Passing Through Glass **Introduction:** This educational resource explores the behavior of light as it strikes a flat piece of glass. We will examine how the light ray bends when entering and exiting the glass, using the principles of refraction. **Text Description:** A light ray strikes a flat piece of glass at an angle of incidence of 60 degrees. The index of refraction for the glass is 1.5, and the thickness of the glass is 2 cm. We will trace the path of the light ray until it emerges from the glass. **Diagram Explanation:** The diagram illustrates a light ray approaching a flat surface separating air from glass. The incident light ray makes an angle of 60 degrees with the normal (a dashed line perpendicular to the surface). 1. **Incident Ray:** The ray in the air approaching the glass at a 60-degree angle. 2. **Normal Line:** The dashed line perpendicular to the surface of the glass, forming a reference for measuring angles. 3. **Refraction:** As the light ray enters the glass, it bends towards the normal line due to the change in speed caused by the glass's higher refractive index (1.5). 4. **Emerging Ray:** After traveling through the glass for 2 cm, the light ray exits the glass, bending away from the normal. Its path outside the glass can be traced using the same angle relationships and Snell’s Law. **Concepts Covered:** - **Angle of Incidence:** 60 degrees. - **Refractive Index:** 1.5 for the glass. - **Snell’s Law:** Used to determine the angle of refraction as the light enters and exits the glass. This example demonstrates the bending of light as it moves between different media, a fundamental concept in optics, crucial for understanding lenses, prisms, and various optical technologies.
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