About Optics

Do you know your optics? Test your knowledge with this optics MCQ! This quiz will cover everything from the basics of light to more complex concepts like interference and diffraction. It's important to have a strong understanding of optics if you want to be successful in fields like physics or engineering. So don't delay - start quizzing yourself now!

Following are some of the multiple choice questions on the Optics with answers that will help the students in developing their knowledge.

Optics MCQ

1. Optics is the study of

  • human eyesight
  • the properties of light
  • how light behaves when it hits different surfaces
  • telescopes

2. What is the difference between a lens and a mirror?

  • A lens is transparent and a mirror is not.
  • A lens bends light and a mirror reflects it.
  • A lens magnifies objects and a mirror does not.
  • There is no difference between lenses and mirrors.

3. What is optics?

  • The study of rainbows
  • The study of light and its properties
  • The study of the human eye
  • The study of telescopes

4. What is the speed of light in a vacuum?

  • 299,792 km/s
  • 186,000 mi/s
  • 300,000 m/s
  • The speed of light is always the same, no matter what medium it is travelling through.

5. Optically active substances are those substances which

  • produces polarised light
  • produces double refraction
  • rotate the plane of polarization of polarised light
  • converts a plane polarised light into circularly polarised light.

6. Which of the following phenomena is used in optical fibres?

  • Total internal reflection
  • Scattering
  • Diffraction
  • Refraction

7. Fermat's principle states that:

  • The path taken by a light ray is always the shortest.
  • The path taken by a light ray is the one for which the optical path length is a maximum.
  • The path a light ray takes maximizes its time of travel between any two points.
  • The path taken by a light ray always minimizes the time between any two points.

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