Light and Mirrors Quiz
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Questions and Answers

Which of the following is NOT a component of Ontario's Climate Plan?

  • Sustainable building materials
  • Increased fossil fuel use (correct)
  • Improved energy efficiency in buildings
  • Waste reduction and recycling

    • Transportation is one of the largest sources of greenhouse gas emissions in Canada.

    True

    What is the definition of a luminous object?

    An object that produces its own light.

    Incandescence is the light produced by a ______ object.

    <p>hot</p> Signup and view all the answers

    Match the following examples with their corresponding categories of light objects:

    <p>Sun = Luminous Object Mirror = Non-Luminous Object Candle = Incandescent Object Moon = Non-Luminous Object</p> Signup and view all the answers

    What type of image is formed by a converging mirror when it is located between C and F?

    <p>Smaller and inverted</p> Signup and view all the answers

    The image produced by a diverging mirror is larger than the object.

    <p>False</p> Signup and view all the answers

    What is the image attitude when a real image is formed at point C by a converging mirror?

    <p>Inverted</p> Signup and view all the answers

    The image formed by a diverging mirror is always __________.

    <p>virtual</p> Signup and view all the answers

    Match the characteristics of the image formed by a converging mirror to their descriptions:

    <p>Image size - Same size = At C Image size - Smaller = Between C and F Image size - Larger = Inside F Attitude - Upright = Diverging mirror</p> Signup and view all the answers

    What is a key difference between phosphorescence and fluorescence?

    <p>Phosphorescence glows longer after the light is gone.</p> Signup and view all the answers

    Incandescent bulbs produce light without generating heat.

    <p>False</p> Signup and view all the answers

    What type of material allows no light to pass through?

    <p>Opaque</p> Signup and view all the answers

    A _____ allows some light to pass but does not allow clear visibility.

    <p>translucent material</p> Signup and view all the answers

    Match the following terms about light with their correct descriptions:

    <p>Transparent = Allows light to pass through fully Translucent = Allows some light to pass but not clearly Opaque = Allows no light to pass through Reflective surface = Bounces light rays off its surface</p> Signup and view all the answers

    What type of reflection occurs when light scatters in many directions off a surface like paper?

    <p>Diffuse reflection</p> Signup and view all the answers

    The angle of incidence is always different from the angle of reflection.

    <p>False</p> Signup and view all the answers

    What is the attitude of the image formed by a concave mirror?

    <p>Upright</p> Signup and view all the answers

    In specular reflection, light reflects off a ______ surface in one direction.

    <p>smooth</p> Signup and view all the answers

    Match the following types of reflections with their descriptions:

    <p>Specular reflection = Light reflects off a smooth surface in one direction. Diffuse reflection = Light scatters in many directions off a rough surface. Virtual image = Image formed appears to be behind the mirror. Concave mirror = Can form both real and virtual images depending on the object position.</p> Signup and view all the answers

    What is the formula for the index of refraction (n)?

    <p>n = C/V</p> Signup and view all the answers

    Total internal reflection can occur when light travels from a less dense medium to a denser medium.

    <p>False</p> Signup and view all the answers

    What is the critical angle for total internal reflection in the example provided?

    <p>34.4°</p> Signup and view all the answers

    The speed of light in a vacuum is approximately ______ m/s.

    <p>3.00 x 10^8</p> Signup and view all the answers

    Match the following types of light phenomena with their descriptions:

    <p>Refraction = Bending of light as it passes from one medium to another Total internal reflection = Light reflects completely back into a denser medium Critical angle = Minimum angle of incidence for total internal reflection Index of refraction = Ratio of the speed of light in a vacuum to its speed in a medium</p> Signup and view all the answers

    What is the correct relationship expressed by the thin lens equation?

    <p>$di = rac{1}{f} ± rac{1}{do}$</p> Signup and view all the answers

    The image formed by a microscope is always upright.

    <p>False</p> Signup and view all the answers

    What is the focal length of a lens if the object distance is 53 cm and the image distance is 27.3 cm?

    <p>27.3 cm</p> Signup and view all the answers

    A camera produces a __________ image that is smaller and inverted.

    <p>smaller</p> Signup and view all the answers

    Match the following lens types with their characteristics:

    <p>Camera = Smaller, inverted, real Projector = Larger, inverted, real Magnifying glass = Larger, upright, real Microscope = Larger, inverted, virtual Telescope = Larger, inverted, real</p> Signup and view all the answers

    Which of the following correctly describes a converging lens?

    <p>Brings light rays together</p> Signup and view all the answers

    A diverging lens has a positive focal point.

    <p>False</p> Signup and view all the answers

    What are the three main components labeled in the diagrams of both lens types?

    <p>Optical center, focal point (F), principal axis</p> Signup and view all the answers

    The path of light rays through a ______ lens diverges.

    <p>diverging</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>Converging Lens = Brings light rays together Diverging Lens = Spreads light rays apart Optical Center = The center where light rays converge Focal Point (F) = Point where rays meet or appear to meet</p> Signup and view all the answers

    What type of image is formed when an object is located beyond $2F$ using a converging lens?

    <p>Real and inverted</p> Signup and view all the answers

    An object located between $F$ and $2F$ results in a virtual and larger image.

    <p>True</p> Signup and view all the answers

    What happens to light rays that pass through the center of a converging lens?

    <p>They continue straight.</p> Signup and view all the answers

    When an object is at $2F$, the image formed is _____ and of _____ size compared to the object.

    <p>inverted, same</p> Signup and view all the answers

    Match the following scenarios to the type of image formed:

    <p>Object between $F$ and $2F$ = Virtual, upright, larger Object at $2F$ = Real, inverted, same size Object beyond $2F$ = Real, inverted, smaller Object closer to the lens than $F$ = Virtual, upright, larger</p> Signup and view all the answers

    Study Notes

    Light and Reflection

    • Light sources are categorized into luminous and non-luminous
    • Luminous objects produce their own light (e.g., sun, light bulb)
    • Non-luminous objects reflect light (e.g., mirrors, moon)
    • Incandescence is light produced from a hot object (e.g., candle)

    Refraction

    • Refraction is the bending of light when it passes from one medium to another
    • The speed of light changes when it enters a different medium.
    • The larger the difference in mediums, the larger the change in speed.
    • Refraction is calculated using the formula n=c/v
    • Examples of mediums are glass, water
    • Formula n=c/v (index of refraction = speed of light in vacuum/speed of light in medium).
    • Example applications include how a pencil appears bent when placed in water, prisms, and rainbows.

    Total Internal Reflection

    • Total internal reflection occurs when light travels from a denser medium to a less dense medium and the angle of incidence is greater than the critical angle.
    • Conditions for total internal reflection:
      • Light must travel from a denser to a less dense medium
      • Angle of incidence must be greater than critical angle.

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    Description

    Test your knowledge on the properties of light, including definitions, types of luminous objects, and the behavior of light with mirrors. This quiz covers concepts like incandescence, fluorescence, and image formation in converging and diverging mirrors.

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