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NEET
Exam
NEET
Subject
Physics
Chapter
Gravitation

NEET · Physics · Gravitation

What relationship exists between the Sun-planet distance ( r _ P )...

What relationship exists between the Sun-planet distance (rP{{r}_{P}}) and the speed of the planet at the perihelion (vP{{v}_{P}}) as compared to the corresponding quantities at the aphelion (rA{{r}_{A}} and vA{{v}_{A}}) in Fig.?
What relationship exists between the Sun-planet distance ( r _ P ) and the speed of the planet at the perihelion ( v _

Options

  1. AvPvA=rPrA\frac{{{v}_{P}}}{{{v}_{A}}}=\frac{{{r}_{P}}}{{{r}_{A}}}
  2. BvPvA=2rPrA\frac{{{v}_{P}}}{{{v}_{A}}}=\frac{2{{r}_{P}}}{{{r}_{A}}}
  3. CvPvA=2rArP\frac{{{v}_{P}}}{{{v}_{A}}}=\frac{2{{r}_{A}}}{{{r}_{P}}}
  4. DvPvA=rArP\frac{{{v}_{P}}}{{{v}_{A}}}=\frac{{{r}_{A}}}{{{r}_{P}}}

Correct answer

D. vPvA=rArP\frac{{{v}_{P}}}{{{v}_{A}}}=\frac{{{r}_{A}}}{{{r}_{P}}}

Step-by-step solution

Correct Option is : (D)
vPvA=rArP\frac{{{v}_{P}}}{{{v}_{A}}}=\frac{{{r}_{A}}}{{{r}_{P}}}
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