2411365
Descripción
Test por Olivia Gibbs, actualizado hace más de 1 año
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Creado por Olivia Gibbs
hace alrededor de 9 años
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Pregunta 1
Pregunta
When a virtual image is created in a plane mirror
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the image is upright.
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the image is located behind the mirror.
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reflected rays diverge.
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ALL OF THE ABOVE
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NONE OF THE ABOVE
Pregunta 2
Pregunta
An echo occurs when sound
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is transmitted through a surface.
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is reflected from a distant surface.
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changes speed when it strikes a distant surface.
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ALL OF THE ABOVE
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NONE OF THE ABOVE
Pregunta 3
Pregunta
Diffuse reflection occurs when the size of surface irregularities
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larger than 1 m in diameter.
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large compared to the wavelength of the light used.
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small compared to the wavelength of the light used.
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larger than 1 cm in diameter.
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NONE OF THE ABOVE
Pregunta 4
Pregunta
It is difficult to see the roadway from a car on a rainy night because the road surface
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is obscured by the rain itself.
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that is normally a diffuse reflector when dry becomes a mirror surface when wet.
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absorbs the light more when wet.
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scatters light in all directions.
Pregunta 5
Pregunta
Refraction is caused by
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different wave speeds.
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more than one reflection.
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displaced images.
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bending.
Pregunta 6
Pregunta
You can hear noises a long distance away over water at night because
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of lowered temperature.
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water conducts sound better at night.
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sound is reflected off water more efficiently at night.
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of refraction of sound in air.
Pregunta 7
Pregunta
The average speed of light is greatest in
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orange glass.
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blue glass.
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red glass.
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green glass.
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IT IS THE SAME IN ALL OF THE ABOVE
Pregunta 8
Pregunta
A mirage can occur
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when cooler air is above hotter air.
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when there's a layer of hot air close to the ground.
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on a hot day.
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ALL OF THE ABOVE
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NONE OF THE ABOVE
Pregunta 9
Pregunta
The critical angle for a light from the bottom of a swimming pool shining upward toward the pool's surface is the angle
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where light is refracted so it just skims the pool surface.
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43 degrees.
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at which all light is refracted out of the pool.
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42 degrees.
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at which some light is reflected from the surface.
Pregunta 10
Pregunta
A person standing waist-deep in a swimming pool appears to have short legs because of light
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refraction.
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interference.
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diffraction.
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reflection.
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absorption.
Pregunta 11
Pregunta
Different colors of light travel at different speeds in a transparent medium. In a vacuum, different colors of light travel at
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the same speed.
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different speeds.
Pregunta 12
Pregunta
The spectrum produced by a prism or a raindrop is evidence that the average speed of light in the material depends on the light's
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transmission qualities.
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col.or.
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wave nature.
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particle nature.
Pregunta 13
Pregunta
The shortest plane mirror in which you can see your entire image
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is half your height.
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is twice your height.
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is equal to your height.
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cannot be determined.
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depends on how far the mirror is from you.
Pregunta 14
Pregunta
A beam of light travels fastest in
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air.
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water.
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plastic.
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glass.
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ITS AVERAGE SPEED IS THE SAME IN EACH OF THE ABOVE
Pregunta 15
Pregunta
Which of the following is a consequence of the refraction of light?
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rainbows
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mirages
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internal reflection
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ALL OF THE ABOVE
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NONE OF THE ABOVE
Pregunta 16
Pregunta
Stars twinkle when seen from Earth at night. When seen from the moon, stars
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twinkle less.
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twinkle more.
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don't twinkle.
Pregunta 17
Pregunta
In a curved optical fiber, light
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gains energy in each internal reflection.
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internally reflects in a succession of straight-line paths.
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bends and follows the curve of the fiber.
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scatters in random directions from the fiber's inner surface.
Pregunta 18
Pregunta
A rainbow nicely illustrates an example of light
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internal reflection.
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refraction.
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internal reflection and refraction.
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neither internally reflecting nor refracting.
Pregunta 19
Pregunta
In a double rainbow, the outermost color in the outermost bow is
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blue.
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green.
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red.
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ANY OF THESE AT DIFFERENT TIMES
Pregunta 20
Pregunta
A secondary rainbow is dimmer than a primary rainbow because
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only large drops produce secondary rainbows.
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sunlight reaching it is less intense.
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there is an extra reflection inside the water drops.
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it is a reflection of the primary rainbow.
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NONE OF THE ABOVE
Pregunta 21
Pregunta
When seen from an airplane, a rainbow sometimes forms a complete circle. When this happens, the plane's shadow is
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in the center of the rainbow.
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totally outside the rainbow.
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in the upper part of the rainbow.
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nowhere. There is no shadow.
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in the lower part of the rainbow.
Pregunta 22
Pregunta
Ninety percent of light incident on a certain piece of glass passes through it. How much light passes through two pieces of this glass?
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81%
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85%
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89%
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90%
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80%
Pregunta 23
Pregunta
The law of reflection says that all light reaching a boundary between two surfaces is reflected.
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- True
- False
Pregunta 24
Pregunta
When you look at the image of a candle in a plane mirror, you see a real image.
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- True
- False
Pregunta 25
Pregunta
Diffuse reflection occurs when light is reflected in many directions from a rough surface.
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- True
- False
Pregunta 26
Pregunta
Reflection occurs when one pat of a wave travels more slowly than another part.
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- True
- False
Pregunta 27
Pregunta
The critical angle is the angle at which light just grazes the surface of a substance.
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- True
- False
Pregunta 28
Pregunta
Total internal reflection occurs when a light ray hits a surface at an angle greater than the critical angle.
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- True
- False
Pregunta 29
Pregunta
When a wave reaches a boundary between two media, in most cases some of the wave is reflected and some is refracted.
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- True
- False
Pregunta 30
Pregunta
A line that represents the position of a wave crest is called a wave front.
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- True
- False
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