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The maximum and minimum distances of a comet from the Sun are 1.6×1012 m and 8×1010 m respectively. If the speed of the comet at the nearest point is 6×104ms−1 , the speed at the farthest point is :

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a

6.0×103m/s

b

1.5×103m/s

c

3.0×103m/s

d

4.5×103m/s

answer is C.

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Detailed Solution

Labout sun =consant⇒V1r1=V2r2⇒6×1048×1010=V21.6×1012 ⇒V2=6×1048×10101.6×1012=3000m/s

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The maximum and minimum distances of a comet from the Sun are 1.6×1012 m and 8×1010 m respectively. If the speed of the comet at the nearest point is 6×104ms−1 , the speed at the farthest point is :