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Reflection and Refraction (Unit Evaluation)

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11th grade Physics (Reflection and Refraction & Electrostatics) Quiz on Reflection and Refraction (Unit Evaluation), created by Olivia Gibbs on 31/03/2015.
Olivia Gibbs
Quiz by Olivia Gibbs, updated more than 1 year ago
Olivia Gibbs
Created by Olivia Gibbs about 9 years ago
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Resource summary

Question 1

Question
When a virtual image is created in a plane mirror
Answer
  • the image is upright.
  • the image is located behind the mirror.
  • reflected rays diverge.
  • ALL OF THE ABOVE
  • NONE OF THE ABOVE

Question 2

Question
An echo occurs when sound
Answer
  • is transmitted through a surface.
  • is reflected from a distant surface.
  • changes speed when it strikes a distant surface.
  • ALL OF THE ABOVE
  • NONE OF THE ABOVE

Question 3

Question
Diffuse reflection occurs when the size of surface irregularities
Answer
  • larger than 1 m in diameter.
  • large compared to the wavelength of the light used.
  • small compared to the wavelength of the light used.
  • larger than 1 cm in diameter.
  • NONE OF THE ABOVE

Question 4

Question
It is difficult to see the roadway from a car on a rainy night because the road surface
Answer
  • is obscured by the rain itself.
  • that is normally a diffuse reflector when dry becomes a mirror surface when wet.
  • absorbs the light more when wet.
  • scatters light in all directions.

Question 5

Question
Refraction is caused by
Answer
  • different wave speeds.
  • more than one reflection.
  • displaced images.
  • bending.

Question 6

Question
You can hear noises a long distance away over water at night because
Answer
  • of lowered temperature.
  • water conducts sound better at night.
  • sound is reflected off water more efficiently at night.
  • of refraction of sound in air.

Question 7

Question
The average speed of light is greatest in
Answer
  • orange glass.
  • blue glass.
  • red glass.
  • green glass.
  • IT IS THE SAME IN ALL OF THE ABOVE

Question 8

Question
A mirage can occur
Answer
  • when cooler air is above hotter air.
  • when there's a layer of hot air close to the ground.
  • on a hot day.
  • ALL OF THE ABOVE
  • NONE OF THE ABOVE

Question 9

Question
The critical angle for a light from the bottom of a swimming pool shining upward toward the pool's surface is the angle
Answer
  • where light is refracted so it just skims the pool surface.
  • 43 degrees.
  • at which all light is refracted out of the pool.
  • 42 degrees.
  • at which some light is reflected from the surface.

Question 10

Question
A person standing waist-deep in a swimming pool appears to have short legs because of light
Answer
  • refraction.
  • interference.
  • diffraction.
  • reflection.
  • absorption.

Question 11

Question
Different colors of light travel at different speeds in a transparent medium. In a vacuum, different colors of light travel at
Answer
  • the same speed.
  • different speeds.

Question 12

Question
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
Answer
  • transmission qualities.
  • col.or.
  • wave nature.
  • particle nature.

Question 13

Question
The shortest plane mirror in which you can see your entire image
Answer
  • is half your height.
  • is twice your height.
  • is equal to your height.
  • cannot be determined.
  • depends on how far the mirror is from you.

Question 14

Question
A beam of light travels fastest in
Answer
  • air.
  • water.
  • plastic.
  • glass.
  • ITS AVERAGE SPEED IS THE SAME IN EACH OF THE ABOVE

Question 15

Question
Which of the following is a consequence of the refraction of light?
Answer
  • rainbows
  • mirages
  • internal reflection
  • ALL OF THE ABOVE
  • NONE OF THE ABOVE

Question 16

Question
Stars twinkle when seen from Earth at night. When seen from the moon, stars
Answer
  • twinkle less.
  • twinkle more.
  • don't twinkle.

Question 17

Question
In a curved optical fiber, light
Answer
  • gains energy in each internal reflection.
  • internally reflects in a succession of straight-line paths.
  • bends and follows the curve of the fiber.
  • scatters in random directions from the fiber's inner surface.

Question 18

Question
A rainbow nicely illustrates an example of light
Answer
  • internal reflection.
  • refraction.
  • internal reflection and refraction.
  • neither internally reflecting nor refracting.

Question 19

Question
In a double rainbow, the outermost color in the outermost bow is
Answer
  • blue.
  • green.
  • red.
  • ANY OF THESE AT DIFFERENT TIMES

Question 20

Question
A secondary rainbow is dimmer than a primary rainbow because
Answer
  • only large drops produce secondary rainbows.
  • sunlight reaching it is less intense.
  • there is an extra reflection inside the water drops.
  • it is a reflection of the primary rainbow.
  • NONE OF THE ABOVE

Question 21

Question
When seen from an airplane, a rainbow sometimes forms a complete circle. When this happens, the plane's shadow is
Answer
  • in the center of the rainbow.
  • totally outside the rainbow.
  • in the upper part of the rainbow.
  • nowhere. There is no shadow.
  • in the lower part of the rainbow.

Question 22

Question
Ninety percent of light incident on a certain piece of glass passes through it. How much light passes through two pieces of this glass?
Answer
  • 81%
  • 85%
  • 89%
  • 90%
  • 80%

Question 23

Question
The law of reflection says that all light reaching a boundary between two surfaces is reflected.
Answer
  • True
  • False

Question 24

Question
When you look at the image of a candle in a plane mirror, you see a real image.
Answer
  • True
  • False

Question 25

Question
Diffuse reflection occurs when light is reflected in many directions from a rough surface.
Answer
  • True
  • False

Question 26

Question
Reflection occurs when one pat of a wave travels more slowly than another part.
Answer
  • True
  • False

Question 27

Question
The critical angle is the angle at which light just grazes the surface of a substance.
Answer
  • True
  • False

Question 28

Question
Total internal reflection occurs when a light ray hits a surface at an angle greater than the critical angle.
Answer
  • True
  • False

Question 29

Question
When a wave reaches a boundary between two media, in most cases some of the wave is reflected and some is refracted.
Answer
  • True
  • False

Question 30

Question
A line that represents the position of a wave crest is called a wave front.
Answer
  • True
  • False
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