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Questions and Answers
How does light behave?
How does light behave?
Light can either be reflected or refracted.
What term refers to when light bounces off an object?
What term refers to when light bounces off an object?
Reflection
What form of illustration is used to determine the direction where the light ray is going?
What form of illustration is used to determine the direction where the light ray is going?
Ray Diagram
What is an imaginary line perpendicular to the surface?
What is an imaginary line perpendicular to the surface?
What is the angle which an incident ray makes with the normal line?
What is the angle which an incident ray makes with the normal line?
What is the angle which the reflected ray makes with the normal?
What is the angle which the reflected ray makes with the normal?
What does the law of reflection state?
What does the law of reflection state?
When is light refracted?
When is light refracted?
What happens when light is reflected into multiple directions?
What happens when light is reflected into multiple directions?
What happens when light is reflected at only one path?
What happens when light is reflected at only one path?
What is an imaginary line passing through the center of the sphere at the exact center of the mirror?
What is an imaginary line passing through the center of the sphere at the exact center of the mirror?
What is the point on the mirror's surface where this axis meets the mirror?
What is the point on the mirror's surface where this axis meets the mirror?
What is the point in the center of the sphere from which the mirror was sliced?
What is the point in the center of the sphere from which the mirror was sliced?
What is the distance between the vertex and the focal point?
What is the distance between the vertex and the focal point?
What is used in order to find where an image will be located if an object is placed in front of a mirror?
What is used in order to find where an image will be located if an object is placed in front of a mirror?
This mirror focuses light away from the focal point that is why it is called a diverging mirror.
This mirror focuses light away from the focal point that is why it is called a diverging mirror.
A curved mirror where the reflecting surface is on the inner surface of the sphere so that the center of the mirror sinks away from the viewer.
A curved mirror where the reflecting surface is on the inner surface of the sphere so that the center of the mirror sinks away from the viewer.
What is a reference ray starting from the object going parallel to the principal axis is drawn?
What is a reference ray starting from the object going parallel to the principal axis is drawn?
The second reference ray goes through F and then goes parallel to principal axis after hitting the mirror.
The second reference ray goes through F and then goes parallel to principal axis after hitting the mirror.
The third reference ray goes through C then goes back along itself through C.
The third reference ray goes through C then goes back along itself through C.
A small object is positioned 15 cm from a convex mirror with a focal length of 10 cm. Calculate the image distance.
A small object is positioned 15 cm from a convex mirror with a focal length of 10 cm. Calculate the image distance.
A small object is positioned 15 cm from a convex mirror with a focal length of 10 cm. Calculate the image height.
A small object is positioned 15 cm from a convex mirror with a focal length of 10 cm. Calculate the image height.
A 25 cm tall object standing 60 cm from a concave mirror having a focal length of 50 cm. Calculate the image distance.
A 25 cm tall object standing 60 cm from a concave mirror having a focal length of 50 cm. Calculate the image distance.
A 25 cm tall object standing 60 cm from a concave mirror having a focal length of 50 cm. Calculate the image height.
A 25 cm tall object standing 60 cm from a concave mirror having a focal length of 50 cm. Calculate the image height.
Flashcards
Reflection
Reflection
When light bounces off a surface.
Ray Diagram
Ray Diagram
A diagram used to show the path of light rays.
Normal Line
Normal Line
An imaginary line perpendicular to a surface.
Angle of Incidence
Angle of Incidence
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Angle of Reflection
Angle of Reflection
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Law of Reflection
Law of Reflection
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Refraction
Refraction
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Diffuse Reflection
Diffuse Reflection
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Specular Reflection
Specular Reflection
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Principal Axis
Principal Axis
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Vertex
Vertex
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Center of Curvature
Center of Curvature
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Focal Length
Focal Length
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Convex Mirror
Convex Mirror
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Concave Mirror
Concave Mirror
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Principal Ray
Principal Ray
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Focal Ray
Focal Ray
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Central Ray
Central Ray
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Study Notes
Light Behavior
- Light can be reflected or refracted.
- Reflection is when light bounces off an object.
- A ray diagram illustrates the direction of a light ray.
- A normal line is an imaginary line perpendicular to a surface.
- The angle of incidence is the angle between the incident ray and the normal.
- The angle of reflection is the angle between the reflected ray and the normal.
- The law of reflection states the angle of reflection equals the angle of incidence.
- Refraction occurs when light travels through different media, changing velocity.
- Diffuse reflection occurs when light reflects in multiple directions.
- Specular reflection occurs when light reflects in a single direction.
Mirror Terminology
- Principal axis is an imaginary line through the center of a spherical mirror.
- The vertex is the point where the principal axis intersects the mirror's surface.
- The center of curvature is the center of the sphere from which the mirror was formed.
- The focal length is the distance between the vertex and the focal point.
- A focal point is where rays parallel to the principal axis converge or appear to diverge after reflection.
- A ray diagram is used to locate images formed by mirrors.
- A convex mirror diverges light away from the focal point.
- A concave mirror reflects light towards a focal point.
Ray Types
- Principal Ray: A ray starting from the object and going parallel to the principal axis.
- Focal Ray: A ray that passes through the focal point and reflects parallel to the principal axis after hitting the mirror.
- Central Ray: A ray that passes through the center of curvature and reflects back on itself.
Image Formation
- Image distance and height can be calculated using ray diagrams and formulas.
- Object distance, focal length, and mirror type are necessary to determine image characteristics.
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