Concave Lens Group 3 Quiz

15 Questions | Total Attempts: 275

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Lens Quizzes & Trivia

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Questions and Answers
  • 1. 
    Concave lens is also known as converging lens.
    • A. 

      True

    • B. 

      False

  • 2. 
    Any lens that is "thicker in the center" than on the edges is convex lens.
    • A. 

      True

    • B. 

      False

  • 3. 
    Concave lens is thinner at its center than its edges.
    • A. 

      True

    • B. 

      False

  • 4. 
    Convex lens is also known as converging lens.
    • A. 

      True

    • B. 

      False

  • 5. 
    Lenses are classified in to three.
    • A. 

      True

    • B. 

      False

  • 6. 
    The point where all rays which enter the lens parallel to its axis are brought to a focus is called the ________ focus.
    • A. 

      Principal

    • B. 

      Focal

    • C. 

      Center

  • 7. 
    how many varieties of lens are there?
    • A. 

      2

    • B. 

      4

    • C. 

      3

  • 8. 
    Mirrors and lenses both have the ability to reflect or ______ light.
    • A. 

      Reduce

    • B. 

      Refract

    • C. 

      Resurrect

  • 9. 
    Lens that possesses at least one surface that curves ________ is a diverging lens.
    • A. 

      Outwards

    • B. 

      Sidewards

    • C. 

      Inwards

  • 10. 
    Any lens that is thicker in the center than on the edges is generally described as a ______ lens.
    • A. 

      Concave

    • B. 

      Convex

    • C. 

      Diverging

  • 11. 
    The image formed by a _______ lens is virtual, upright, and smaller than the object.
    • A. 

      Concave

    • B. 

      Convex

    • C. 

      Convension

  • 12. 
    The ______ formed by a concave lens is cannot be projected onto a screen.
    • A. 

      Image

    • B. 

      Shadow

    • C. 

      Reflection

  • 13. 
    A similar point the same distance in front of the lens is called the len's _________ focus.
    • A. 

      Double

    • B. 

      Secondary

    • C. 

      Binary

  • 14. 
    The distance from the ______ of the lens to the principal focus is called the focal length.
    • A. 

      Left

    • B. 

      Center

    • C. 

      Right

  • 15. 
     A concave lens is thinner at its centre than at its edges, and is used to correct _____-sightedness.
    • A. 

      Long

    • B. 

      Far

    • C. 

      Short

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