Reflecting telescopes
Quiz by Bull
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9 questions
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- Q1What is used to make a reflecting telescope?Concave lensConcave mirrorConvex mirrorConvex lens30s
- Q2What type of mirror is used for secondary mirror?Concave mirrorConcave kensConvex lensConvex mirror30s
- Q3Which of following is not a reason for using a secondary mirrorStops viewer getting in the wayIncrease the field of viewIncrease angular magnificationIncreases the focal length30s
- Q4What is spherical aberration?White light dispersesRays of light do not focus at a single pointBlue light refracts more than redMirror is too round30s
- Q5What type of mirror is used to correct spherical aberration?RoundParabolicOvalEgg30s
- Q6What will an image look like if spherical aberration has occurred?MagnifiedBlurryBlurry with Multicoloured edgesDiminished30s
- Q7Increasing the objective lens/mirror from 10mm to 50mm will increase the amount of light it collects by25 times125 times5 times50 times30s
- Q8Which of the following is not an advantage of reflecting telescopeswider field of viewNo chromatic aberrationEasier to handleGreater angular magnification30s
- Q9In chromatic aberration which colour is closest to the lens?BlueRed30s