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Questions and Answers
What is light?
What is light?
Light is a form of energy that is transmitted by vibrating electric charges in atoms. It travels in a straight line and is both wave and a particle.
What is Max Planck's theory of light?
What is Max Planck's theory of light?
Max Planck stated that light is composed of pockets of energy called quanta (quantum).
What is Isaac Newton's theory of light?
What is Isaac Newton's theory of light?
Isaac Newton stated that light is composed of tiny particles of matter emitted by a source and spread outward in a straight line called a ray (The Particle Theory of Light).
What is Christian Huygens' theory of light?
What is Christian Huygens' theory of light?
Which of the following are the laws of reflection?
Which of the following are the laws of reflection?
The ______ is the ray approaching the mirror.
The ______ is the ray approaching the mirror.
The ______ is the ray reflected by the mirror.
The ______ is the ray reflected by the mirror.
The ______ is the point where the incident ray strikes the mirror.
The ______ is the point where the incident ray strikes the mirror.
The ______ is the construction line drawn at right angles to the mirror at the point of incidence.
The ______ is the construction line drawn at right angles to the mirror at the point of incidence.
The ______ is the angle between the incident ray and the normal line.
The ______ is the angle between the incident ray and the normal line.
The ______ is the angle between the reflected ray and the normal line.
The ______ is the angle between the reflected ray and the normal line.
What is a virtual image?
What is a virtual image?
Which of the following describes a concave mirror?
Which of the following describes a concave mirror?
The ______ is the center of a space of which the mirror is a part.
The ______ is the center of a space of which the mirror is a part.
The ______ is the diameter of a mirror.
The ______ is the diameter of a mirror.
The ______ is the center of the mirror.
The ______ is the center of the mirror.
The ______ is the line drawn through the center of curvature of the vertex.
The ______ is the line drawn through the center of curvature of the vertex.
The ______ is any other line drawn through the center of curvature.
The ______ is any other line drawn through the center of curvature.
The ______ is the point between the center of curvature and the vertex and is where the light rays meet.
The ______ is the point between the center of curvature and the vertex and is where the light rays meet.
The ______ is the distance from the vertex to the focus.
The ______ is the distance from the vertex to the focus.
The incident ray parallel to the principal axis is reflected through the focus.
The incident ray parallel to the principal axis is reflected through the focus.
The incident ray that passes through the focal point is reflected parallel to the principal axis.
The incident ray that passes through the focal point is reflected parallel to the principal axis.
The ray that passes through the center of curvature passes back along the same path.
The ray that passes through the center of curvature passes back along the same path.
Flashcards
What is LIGHT?
What is LIGHT?
Energy transmitted by vibrating electric charges, traveling in a straight line, acting as both a wave and a particle.
Who is Max Planck?
Who is Max Planck?
Light is composed of pockets of energy called quanta (quantum).
Who is Isaac Newton?
Who is Isaac Newton?
Light is composed of tiny particles of matter emitted from a source in a straight line (ray).
What is a Ray?
What is a Ray?
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Who is Christian Huygens?
Who is Christian Huygens?
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What is the 1st Law of Reflection?
What is the 1st Law of Reflection?
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What is the 2nd Law of Reflection?
What is the 2nd Law of Reflection?
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What is an Incident Ray?
What is an Incident Ray?
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What is a Reflected Ray?
What is a Reflected Ray?
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What is the Point of Incidence?
What is the Point of Incidence?
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What is the Normal Line?
What is the Normal Line?
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What is the Angle of Incidence?
What is the Angle of Incidence?
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What is the Angle of Reflection?
What is the Angle of Reflection?
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What is a Virtual Image?
What is a Virtual Image?
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What is a Real Image?
What is a Real Image?
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What is a Concave Mirror?
What is a Concave Mirror?
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What is a Convex Mirror?
What is a Convex Mirror?
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What is the Center of Curvature?
What is the Center of Curvature?
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What is the Aperture?
What is the Aperture?
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What is the Vertex?
What is the Vertex?
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What is the Principal Axis?
What is the Principal Axis?
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What is the Secondary Axis?
What is the Secondary Axis?
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What is the Focus?
What is the Focus?
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What is the Focal Length?
What is the Focal Length?
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Concave Mirror Ray 1
Concave Mirror Ray 1
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Concave Mirror Ray 2
Concave Mirror Ray 2
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Concave Mirror Ray 3
Concave Mirror Ray 3
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Image Location?
Image Location?
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Converging Mirror
Converging Mirror
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Diverging Mirror
Diverging Mirror
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Study Notes
- Light is a form of energy transmitted by vibrating electric charges in atoms.
- Light travels in a straight line and exhibits both wave and particle properties.
Theories of Light
- Max Planck proposed that light is composed of pockets of energy called quanta (quantum).
- Isaac Newton stated that light consists of tiny particles emitted from a source and spreading in a straight line (Particle Theory of Light).
- Christian Huygens proposed that light consists of a series of waves with wavefronts at right angles to the path of rays (Wave Theory of Light).
- A ray represents a narrow stream or the path taken by light energy.
- A beam of light is a stream of light rays.
Plane Mirrors
- Laws of Reflection:
- The incident ray, reflected ray, and normal all lie in the same plane.
- The angle of incidence and the angle of reflection are equal
- Incident ray approaches the mirror.
- Reflected ray is reflected by the mirror.
- The point of incidence is where the incident ray strikes the mirror.
- Normal line is a construction line drawn at right angles to the mirror at the point of incidence.
- Angle of incidence is the angle between the incident ray and the normal line.
- Angle of reflection is the angle between the reflected ray and the normal line.
Images in Plane Mirrors
- Virtual image: formed by the extensions of reflected rays.
- Real image: formed by the actual convergence of light rays upon a screen.
Curved/Spherical Mirrors
- Concave Mirror: The reflecting surface is the inner one, also known as a converging mirror which can form real and virtual images.
- Convex Mirror: The reflecting surface is the outer one, is also know as diverging mirror, and only forms virtual, erect, reduced images behind the mirror.
Features of Spherical Mirrors
- Center of curvature: the center of a sphere of which the mirror is a part.
- Aperture: the diameter of a mirror.
- Vertex: the center of the mirror.
- Principal axis: a line drawn through the center of curvature of the vertex.
- Secondary axis: any line drawn through the center of curvature.
- Focus: the point between the center of curvature and the vertex where light rays meet.
- Focal length: the distance from the vertex to the focus, it is half the distance from the vertex of curvature to the focus.
Concave Mirror Ray Diagrams
- An incident ray parallel to the principal axis is reflected through the focus.
- An incident ray passing through the focal point is reflected parallel to the principal axis.
- A ray passing through the center of curvature passes back along the same path.
- The location of the intersection of the reflected rays indicates the location of the formed image.
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Description
Explore light as a form of energy with wave-particle duality. Discover theories by Planck, Newton, and Huygens. Learn laws governing reflection in plane mirrors, including incident and reflected rays.
