A planet orbits the sun in an elliptical path as shown in the figure. Let $v_P$ and $v_A$ be speed of the planet when at perihelion and aphelion respectively. Which of the following relations is correct ?
A planet orbits the sun in an elliptical path as shown in the figure. Let $v_P$ and $v_A$ be speed of the planet when at perihelion and aphelion respectively. Which of the following relations is correct ?
- A
$\frac{{{r_P}}}{{{r_A}}} = \frac{{{v_A}}}{{{v_P}}}$
- B
$\frac{{{r_P}}}{{{r_A}}} = \frac{{{v_P}}}{{{v_A}}}$
- C
$\frac{{{r_P}}}{{{r_A}}} = \sqrt {\frac{{{v_P}}}{{{v_A}}}} $
- D
$\frac{{{r_P}}}{{{r_A}}} = \sqrt {\frac{{{v_A}}}{{{v_P}}}} $
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