Test Your Knowledge On Optic Lights!

15 Questions

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Optics Quizzes & Trivia

Test your knowledge on this optic lights quiz and see how you do and compare your score too.


Questions and Answers
  • 1. 
    • A. 

      Aim above the image of the fish

    • B. 

      Aim below the image of the fish

    • C. 

      Aim at the image of the fish

    • D. 

      Aim behind the fish

    • E. 

      Put away the spear and use a fishing rod

  • 2. 
    A light ray has an angle of incidence of 34º. The reflected ray will make what angle with the reflecting surface?
    • A. 

    • B. 

      34º

    • C. 

      56º

    • D. 

      66º

    • E. 

      74º

  • 3. 
    The critical angle for diamond (n = 2.42) submerged in water (n = 1.33) is
    • A. 

      33°

    • B. 

      49°

    • C. 

      24°

    • D. 

      17°

    • E. 

      Does not exist

  • 4. 
    Calculate the index of refraction for an object in which light travels at 1.97 x 108 m/s.
    • A. 

      1.97 m/s

    • B. 

      0.66 m/s

    • C. 

      1.52 m/s

    • D. 

      1.95

    • E. 

      1.52

  • 5. 
    The critical angle of zircon is 31°. Which of the following incident angles would result in total internal reflection?
    • A. 

      17°

    • B. 

      34°

    • C. 

      42°

    • D. 

      A and C

    • E. 

      B and C

  • 6. 
    When a light ray travelling in glass is incident on an air surface,
    • A. 

      It will refract away from the normal

    • B. 

      Some of the light may be reflected

    • C. 

      All of the light may be reflected

    • D. 

      All of A, B, and C

    • E. 

      Two of A, B, and C

  • 7. 
    Light travels from medium X into medium Y. Medium Y has a higher index of refraction. Consider each statement below:(i) The light travels faster in X. (ii) The light will bend towards the normal. (iii) The light will speed up. (iv) The light will bend away from the normal.
    • A. 

      (ii)

    • B. 

      (iii) and (iv)

    • C. 

      (i)

    • D. 

      (i) and (ii)

    • E. 

      (ii), (iii), and (iv)

  • 8. 
    For a converging lens, a light ray that is travelling parallel to the principal axis refracts
    • A. 

      Through the principal focus

    • B. 

      Through the secondary focus

    • C. 

      Through the optical centre

    • D. 

      Parallel to the principal axis

    • E. 

      In line with the principal focus

  • 9. 
    A object is placed between f and 2f for a diverging lens. The image will be located
    • A. 

      Between f and 2f

    • B. 

      Between the lens and f

    • C. 

      Farther than 2f

    • D. 

      A or B

    • E. 

      There is insufficient information to answer the question.

  • 10. 
    Light that travels into the eye passes through several parts to get to the retina. The correct order is
    • A. 

      Cornea, vitreous humour, lens, pupil

    • B. 

      Lens, cornea, pupil, vitreous humour

    • C. 

      Cornea, lens, pupil, vitreous humour

    • D. 

      Pupil, cornea, lens, vitreous humour

    • E. 

      Cornea, pupil, lens, vitreous humour

  • 11. 
    The proper name for the inability to focus in different planes is
    • A. 

      Hyperopia

    • B. 

      Presbyopia

    • C. 

      Astigmatism

    • D. 

      Myopia

    • E. 

      Glaucoma

  • 12. 
    The proper name for farsightedness is
    • A. 

      Hyperopia

    • B. 

      Presbyopia

    • C. 

      Astigmatism

    • D. 

      Myopia

    • E. 

      Glaucoma

  • 13. 
    A block of glass is pushed into the path of the light, as shown below.The point where the light rays cross will
    • A. 

      Stay in the same place

    • B. 

      Move to the left

    • C. 

      Move to the right

    • D. 

      Shift up

    • E. 

      Shift down

  • 14. 
    The focal length of a converging lens is 15 cm. An object is placed 45 cm away from the lens. The image will be
    • A. 

      Smaller and real

    • B. 

      Larger and real

    • C. 

      The same size and real

    • D. 

      Smaller and virtual

    • E. 

      Larger and virtual

  • 15. 
    The focal length of a diverging lens is 12 cm. An object is placed 5.0 cm away from the lens. The image will be
    • A. 

      Smaller and real

    • B. 

      Larger and real

    • C. 

      The same size and real

    • D. 

      Smaller and virtual

    • E. 

      Larger and virtual