The maximum and minimum distances of a comet from the Sun are 1.6×1012 m and 8.0×1010 m respectively. If the speed of the comet at the nearest point is 6×104ms−1, the speed at the farthest point is:

Labout sun =consantV1r1=V2r2(6×104)(8×1010)=V2(1.6×1012)

The maximum and minimum distances of a comet from the Sun are 1.6×1012 m and 8.0×1010 m respectively. If the speed of the comet at the nearest point is 6×104ms−1, the speed at the farthest point is:

Labout sun =consantV1r1=V2r2(6×104)(8×1010)=V2(1.6×1012)

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The maximum and minimum distances of a comet from the Sun are $1.6 \times 10^{12} m$ and $8.0 \times 10^{10} m$ respectively. If the speed of the comet at the nearest point is $6 \times 10^{4} m s^{- 1},$ the speed at the farthest point is:

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$3.0 \times 10^{3} m / s$

$6.0 \times 10^{3} m / s$

$1.5 \times 10^{3} m / s$

$4.5 \times 10^{3} m / s$

answer is C.

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$L_{about sun} =consant$

$\begin{array}{l} V_{1} r_{1} = V_{2} r_{2} \\ (6 \times 10^{4}) (8 \times 10^{10}) = V_{2} (1.6 \times 10^{12}) \end{array}$

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The maximum and minimum distances of a comet from the Sun are 1.6×1012 m and 8.0×1010 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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The maximum and minimum distances of a comet from the Sun are $1.6 \times 10^{12} m$ and $8.0 \times 10^{10} m$ respectively. If the speed of the comet at the nearest point is $6 \times 10^{4} m s^{- 1},$ the speed at the farthest point is: