1. Which of the following would not be observed if you observed the sky without a...

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Physics

1. Which of the following would not be observed if you observedthe sky without a telescope? (More than one answer can becorrect).
Venus moves relative to the Sun.
Mars moves relative to the stars.
The starts rotate about a single point in the sky.
The stars move relative to each other.
The Moon moves relative to the stars.
2.Comparing theories by Ptolemy and by Copernicus. (More thanone answer may be correct)
Both could explain retrograde motion
Copernicus' theory could explain retrograde motion, butPtolemy's could not
Ptolemy's theory could explain retrograde motion, butCopernicus' could not
Neither of them could explain retrograde motion

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Ans 1 When we observed sky with nacked eye we unable to see 1 The starts rotate about a single point in the sky 2 The stars move relative to each other because they are too far away to us and we can see them only like a point but because of large distance from earth and our visible capacity we can not See Answer

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		Both could explain retrograde motion
		Copernicus' theory could explain retrograde motion, butPtolemy's could not
		Ptolemy's theory could explain retrograde motion, butCopernicus' could not
		Neither of them could explain retrograde motion