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20 Cards in this Set
- Front
- Back
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Electromagnetic radiation carries
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energy
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An object is placed in front of a concave spherical mirror. Which of the following statements concerning the resulting image is false?
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An object that is placed at a distance less than the focal length from the mirror will produce a real image.
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In which one of the following cases will total internal reflection occur?
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Light is traveling from a material that has a larger index of refraction into a material that has a smaller index of refraction.
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Place the following in order from most energy to least energy:
gamma rays infrared rays visible light ultraviolet light |
gamma rays, ultraviolet light, visible light, infrared rays
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The speed of light in a vacuum is
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a constant value everywhere in the universe.
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The wavelength of electromagnetic radiation is
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inversely proportional to frequency and inversely proportional to energy
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What is the angle of refraction when the angle of incidence is equal to the critical angle?
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90 degrees
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What type of image does an observer see when the light rays entering his/her eye do not actually emanate from the image?
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virtual
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When does Dispersion occur
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the index of refraction varies with the wavelength of light
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Which of the following parameters is not needed to use the mirror equation to solve for an unknown parameter?
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The height of the object
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Which of the following regions of the electromagnetic spectrum has the longest wavelength?
radio waves infrared waves gamma rays visible waves |
Radio Waves
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Which one of the following types of electromagnetic radiation is produced by the vibration and rotation of molecules within a material?
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Infrared Radiation
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Which one of the following statements is true for a spherical mirror?
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A mirror that is more curved has a smaller focal length than that for a less curved mirror.
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Which one of the following statements is true concerning a mirror that has a negative focal length?
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The mirror is Convex
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Which one of the following statements is not a characteristic of a plane mirror?
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The image is real
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Which one of the following choices is a statement of the principle of reversibility?
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If the direction of a light ray is reversed, the light retraces its original path.
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Which one of the following statements concerning diverging lenses is true?
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A diverging lens always forms a virtual image of a real object.
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Which one of the following statements concerning converging lenses is false?
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An object cannot be placed in front of the lens such that a virtual image results.
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Which one of the following statements concerning Snell’s law of refraction is false?
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The angle of refraction equals the sum of the angle of incidence and the angle of reflection.
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Which one of the following sentences best describes the term refraction?
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Light changes direction as it travels through the boundary of two different materials.
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