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Reflecting telescopes

Quiz by Bull

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9 questions
Show answers
  • Q1
    What is used to make a reflecting telescope?
    Concave lens
    Concave mirror
    Convex mirror
    Convex lens
    30s
  • Q2
    What type of mirror is used for secondary mirror?
    Concave mirror
    Concave kens
    Convex lens
    Convex mirror
    30s
  • Q3
    Which of following is not a reason for using a secondary mirror
    Stops viewer getting in the way
    Increase the field of view
    Increase angular magnification
    Increases the focal length
    30s
  • Q4
    What is spherical aberration?
    White light disperses
    Rays of light do not focus at a single point
    Blue light refracts more than red
    Mirror is too round
    30s
  • Q5
    What type of mirror is used to correct spherical aberration?
    Round
    Parabolic
    Oval
    Egg
    30s
  • Q6
    What will an image look like if spherical aberration has occurred?
    Magnified
    Blurry
    Blurry with Multicoloured edges
    Diminished
    30s
  • Q7
    Increasing the objective lens/mirror from 10mm to 50mm will increase the amount of light it collects by
    25 times
    125 times
    5 times
    50 times
    30s
  • Q8
    Which of the following is not an advantage of reflecting telescopes
    wider field of view
    No chromatic aberration
    Easier to handle
    Greater angular magnification
    30s
  • Q9
    In chromatic aberration which colour is closest to the lens?
    Blue
    Red
    30s

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