Optics - Light Quiz

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| By Kevin L.
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Kevin L.
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Quizzes Created: 15 | Total Attempts: 16,597
| Attempts: 333
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  • 1/7 Questions

    Nothing moves faster than the speed of ____________.

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About This Quiz

Explore the fundamentals of light in our 'Optics - Light Quiz'! Dive into topics like nuclear fusion, the speed of light, and properties of luminous and non-luminous objects. Understand why light, an electromagnetic wave, doesn't require a medium to travel. Perfect for learners keen on enhancing their understanding of physical science.

Optics - Light Quiz - Quiz

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  • 2. 

    •Unlike heat and sound energy which requires a _________________  (a physical substance) to move, light does not.

    Explanation
    Light is a form of energy that can travel through empty space or a vacuum. Unlike heat and sound energy, which require a medium (a physical substance) to transfer or propagate, light does not need a medium to move. This is because light is made up of electromagnetic waves, which can travel through space without the need for particles or molecules to carry them. Therefore, light can travel through a vacuum, such as outer space, as well as through transparent substances like air, water, or glass.

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  • 3. 

    A _________________ object is one that produces light.

    Explanation
    A luminous object is one that produces light. It emits its own light and is capable of illuminating its surroundings. This can include natural sources of light such as the sun or fire, as well as artificial sources like light bulbs or LED lights. Luminous objects are distinguished from non-luminous objects, which do not produce their own light and can only be seen when illuminated by a luminous source.

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  • 4. 

    The sun provides energy in the form of light through a process called ________  _______.  It occurs when two atoms that naturally repelled each other are pulled together by  a superior force and the atoms fuse together. 

    Explanation
    The correct answer is "nuclear fusion". Nuclear fusion is a process in which two atoms are brought together by a superior force, causing them to fuse and release energy in the form of light.

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  • 5. 

    •Light is classified as an ___________________    ____________________.

    Explanation
    Light is classified as an electromagnetic wave because it consists of oscillating electric and magnetic fields that propagate through space. Electromagnetic waves can travel through a vacuum and do not require a medium for transmission. Light, along with other forms of electromagnetic radiation such as radio waves, microwaves, infrared, ultraviolet, X-rays, and gamma rays, all exhibit wave-like properties such as wavelength, frequency, and amplitude.

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  • 6. 

    White light is not a single colour; it is made up of a mixture of the _________ colours of the rainbow.

    Explanation
    White light is not a single color; it is made up of a mixture of the seven colors of the rainbow.

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  • 7. 

    A _______________ object is one that reflects light.

    Explanation
    A non-luminous object is one that does not emit light on its own but can reflect light from other sources.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 15, 2014
    Quiz Created by
    Kevin L.
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