At the end of its life, the Sun will become a white dwarf, with1/100 its present

Question

At the end of its life, the Sun will become a white dwarf, with1/100 its present size and about 1,000,000 times its presentdensity. How will the orbit of the planet Jupiter change when theSun becomes a white dwarf? A. It will be 100 times smaller than it is now.
B. It will be 1,000,000 times smaller than it is now.
C. It will be 1,000,000 times larger than it is now.
D. It will be the same size as it is now.
E. It will be 100 times larger than it is now.
A. It will be 100 times smaller than it is now.
B. It will be 1,000,000 times smaller than it is now.
C. It will be 1,000,000 times larger than it is now.
D. It will be the same size as it is now.
E. It will be 100 times larger than it is now.

Explanation / Answer

Jupiter's orbit will not change. Since the size is decreasedto 1% but the density goes to 1000%, the total mass of the sun willnot change. The Newtonian formula for gravity does not depend ondensity or volume, rather mass.
Jupiter's orbit will not change.

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