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Questions and Answers
What does bioluminescence refer to?
What does bioluminescence refer to?
Phosphorescence involves immediate light emission after absorbing energy.
Phosphorescence involves immediate light emission after absorbing energy.
False
What is the Law of Reflection?
What is the Law of Reflection?
The angle of incidence is equal to the angle of reflection.
All electromagnetic waves travel at a speed of ___ in a vacuum.
All electromagnetic waves travel at a speed of ___ in a vacuum.
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Match the following terms related to light transmission with their definitions:
Match the following terms related to light transmission with their definitions:
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Which type of light production is demonstrated by a glow stick?
Which type of light production is demonstrated by a glow stick?
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What is triboluminescence?
What is triboluminescence?
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A convex mirror always produces real images.
A convex mirror always produces real images.
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What is refraction?
What is refraction?
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Under what conditions can total internal reflection occur?
Under what conditions can total internal reflection occur?
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Myopia is also known as far-sightedness.
Myopia is also known as far-sightedness.
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The part of the eye most like the film of a camera is the _________.
The part of the eye most like the film of a camera is the _________.
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Match the following conditions of vision with their corrections:
Match the following conditions of vision with their corrections:
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What happens when light travels slower?
What happens when light travels slower?
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What is hyperopia?
What is hyperopia?
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The critical angle for light traveling from water to ice with a refractive index of 1.31 is _________.
The critical angle for light traveling from water to ice with a refractive index of 1.31 is _________.
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Study Notes
Optics Review Solutions
- Chemiluminescence: Light produced by a chemical reaction without a temperature increase. Examples include glow sticks.
- Bioluminescence: Organisms producing light, such as fireflies.
- Fluorescence: Absorbing UV light and immediately emitting light, an example is a fluorescent light.
- Electric Discharge: Passing an electric current through a gas to produce light.
- Phosphorescence: Absorbing UV light and emitting light over time, an example is glow in the dark toys.
- Incandescence: Light production due to high temperatures.
- Triboluminescence: Light created through scratching, rubbing, or crushing certain crystals.
- Transparent: Allows light to pass through easily.
- Translucent: Allows some light to pass through but not clearly.
- Opaque: Does not allow light to pass through.
- Luminous: Produces its own light.
Electromagnetic Spectrum
- The electromagnetic spectrum shows the different wavelengths of light, from radio waves with the longest wavelengths to gamma rays with the shortest wavelengths.
- Included are radio waves, microwaves, infrared light, visible light, UV light, X-rays and gamma rays
Law of Reflection
- The angle of incidence is equal to the angle of reflection. Light reflects off a surface at the same angle it hits the surface.
- A diagram illustrates the incident ray, reflected ray and the normal line as a 90 degree angle
Concave Mirror Calculations
- Object Height (ho): 4.0 cm
- Object Distance (do): 30 cm
- Focal Length (f): 10 cm
- Image Distance (di): 15 cm
- Image Height (hi): -2 cm (The negative sign indicates an inverted image)
- Real Image: The object distance is greater than the focal length and is in front of the mirror.
- Magnification (m): The height of the image divided by the height of the object
Convex Mirror Calculations
- Focal Length (f): -5 cm (convex mirror, negative sign)
- Object Distance (do): 15 cm
- Image Distance (di): -3.75 cm (negative sign indicates a virtual image)
- Magnification (m): 4
Ray Diagrams
- S.A.L.T: Used for describing images. Properties include: size of the image, attitude (upright or inverted), location of the image and type (real or virtual).
Refraction
- Refraction: Bending of light when it travels from one medium to another.
- Critical Angle: Angle at which light moving from a denser medium into a less-dense medium is refracted at 90°
Speed of light
- Speed of light: 3 x 10⁸ m/s
- Index of Refraction: Describes how much light slows down in a specific material
Human Eye
- Refraction: Primary occurs in the cornea.
- Myopia (Nearsightedness): The image is focused in front of the retina and corrected with a diverging lens
- Hyperopia (Farsightedness): The image is focused behind the retina and corrected with a converging lens.
- Presbyopia: Loss of accommodation in the eye. Corrected with converging lenses.
- Astigmatism: An imperfection in the eye's shape that causes blurred vision.
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Description
Test your understanding of key concepts in optics with this review quiz. Explore definitions and examples of light phenomena including chemiluminescence, fluorescence, and the electromagnetic spectrum. Perfect for students wanting to strengthen their grasp of optics fundamentals.
