Podcast
Questions and Answers
What is the relationship between the angle of incidence and the angle of reflection according to the law of reflection?
What is the relationship between the angle of incidence and the angle of reflection according to the law of reflection?
What type of reflection occurs when light hits a rough surface?
What type of reflection occurs when light hits a rough surface?
What are the characteristics of the image formed by a plane mirror?
What are the characteristics of the image formed by a plane mirror?
What type of mirror always produces a virtual image?
What type of mirror always produces a virtual image?
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What is the equation that relates the focal length, object distance, and image distance of a spherical mirror?
What is the equation that relates the focal length, object distance, and image distance of a spherical mirror?
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What is the shape of a concave mirror?
What is the shape of a concave mirror?
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Study Notes
Reflection of Light
Law of Reflection
- The law of reflection states that the angle of incidence (θi) is equal to the angle of reflection (θr)
- This means that the light ray bounces back at the same angle it hit the surface
Types of Reflection
- Specular Reflection: occurs when light hits a smooth surface and bounces back in a mirror-like fashion
- Diffuse Reflection: occurs when light hits a rough surface and scatters in different directions
Reflection at a Plane Mirror
- The image formed by a plane mirror is:
- Virtual (cannot be projected onto a screen)
- Upright (not inverted)
- The same size as the object
- Reversed left to right (but not top to bottom)
Reflection at a Spherical Mirror
- Concave Mirror: curves inward, can produce a real or virtual image
- Convex Mirror: curves outward, always produces a virtual image
- The mirror equation: 1/f = 1/do + 1/di, where f is the focal length, do is the object distance, and di is the image distance
Law of Reflection
- The angle of incidence (θi) is equal to the angle of reflection (θr)
- Light ray bounces back at the same angle it hit the surface
Types of Reflection
- Specular Reflection: smooth surface, mirror-like reflection
- Diffuse Reflection: rough surface, scatters in different directions
Reflection at a Plane Mirror
- Image formed is:
- Virtual (cannot be projected onto a screen)
- Upright (not inverted)
- Same size as the object
- Reversed left to right (but not top to bottom)
Reflection at a Spherical Mirror
- Concave Mirror: curves inward, produces real or virtual image
- Convex Mirror: curves outward, always produces virtual image
- Mirror equation: 1/f = 1/do + 1/di
- f: focal length
- do: object distance
- di: image distance
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Description
Explore the law of reflection, types of reflection, and how light interacts with surfaces. Learn about specular and diffuse reflection.
