909575
Questão 1
Questão
Light is propagating is a direction directly away from you, with an electric field that appears to be rotating in its orientation in the counterclockwise direction. The polarization state of such a wave is:
Responda
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Randomly polarized.
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Plane polarized.
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Left-circularly polarized.
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Right-circularly polarized.
Questão 2
Questão
A birefringent material is best described as:
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Having two different transmission axes.
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Having atoms with two different resonant frequecies.
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Circularly polarizing natural light.
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Having two different indices of refraction.
Questão 3
Questão
In a Young's Double Slit interference pattern, the fourth maximum has an irradiance that is roughly:
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As bright as the central maximum.
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Half as bright as the central maximum.
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8% as bring as the central maximum.
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0.08% as bright as the central maximum.
Questão 4
Questão
Which of the following is true for all lenses:
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All magnified images are inverted.
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All virtual images are inverted.
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All real images are inverted.
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All diminished images are inverted.
Questão 5
Questão
The radius of curvature of a convex mirror of focal length -8 centimeters is:
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-4 centimeters.
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16 centimeters.
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4 centimeters.
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-16 centimeters.
Questão 6
Questão
Virtual images are so called because:
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Light rays that form the image only appear to come from the position where the image is.
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The image is too small to be seen with the naked eye.
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The image can only be projected onto a screen.
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The image is located behind the lens or mirror.
Questão 7
Questão
The spectrum observed when white light is shone through a prism is best explained by:
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Diffraction
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Dichroism
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Distortion
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Dispersion
Questão 8
Questão
The irradiance of a light ray is proportional to:
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The frequency of the light ray.
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The frequency of the light ray squared.
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The amplitude of the electric field of the light ray.
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The amplitude of the electric field of the light ray squared.
Questão 9
Questão
One reason why the sky appears blue is because:
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Much more red light than blue light is absorbed by air atoms.
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Red light is reflected by the atmosphere.
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Blue light is scattered to a greater extent than red light.
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Higher energy light waves have more penetration through the atmosphere.
Questão 10
Questão
Which of the following is true: I) A reflected beam always has the same irradiance as the incident beam; II) a reflected beam lies in the same plane as the incident beam; III) a reflected beam always makes an angle θ = sin-1(n t/n i) with the normal to the interface.
Responda
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I only.
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I and II.
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II and III.
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II only.
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