Light and Optical Devices
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Questions and Answers

Which of the following is true about light?

  • Light is a form of sound
  • Light travels faster than sound (correct)
  • Light cannot travel through a vacuum
  • Light can only be produced by artificial sources

    • Which of the following statements is correct about optical devices?

  • Optical devices can only refract light
  • Optical devices can manipulate light in various ways (correct)
  • Optical devices can only reflect light
  • Optical devices can only manipulate visible light

    • Which of the following is true about the color of an object?

  • The color of an object is determined by the light it absorbs
  • The color of an object is determined by the temperature of the object
  • The color of an object is determined by the light it reflects (correct)
  • The color of an object is determined by the light it emits

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