Free Practice Question
CR · Critical Reasoning
555-605
Weaken
A group of dedicated amateur astronomers has recently tested the new Orion refractor telescope. They found that it allowed them to see planetary details clearly, while the features appeared blurred through their 10-inch (approximately 25-centimeter) Schmidt-Cassegrain telescopes. Despite the 10-inch telescopes having larger apertures and gathering more light than the 5-inch (approximately 13-centimeter) Orion, the astronomers concluded that any serious amateur astronomer should choose the Orion for planetary observation. Which one of the following most seriously weakens the argument?
Answer Choices
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(A) The performance of telescopes can vary significantly based on atmospheric conditions during observations.
B
(B) The clarity of images is just one of many factors that should influence the decision when selecting a telescope for planetary observation.
C
(C) Many dedicated amateur astronomers are not looking to purchase a telescope specifically for planetary observation.
D
(D) The amateur astronomers conducted their comparisons over multiple nights of observation.
E
(E) The materials used in the construction of the Orion telescope's lenses are different from those used in other telescopes.
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A
AmanFeb 28, 2025
Great question!
Details
Difficulty
555-605
Type
CR