Question

A planet moving along an elliptical orbit is closest to Sun at distant r1 and farthest
away at distance r2. If V1 and V2 are the linear velocities at these points respectively
then the ratio v1/v2
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Answer 1

Answer:

since no external force acts so angular momentum is conserved therefore

mv1r1= mv2r2

v1r1= v2r2

v1/v2 = r2/r1

rate like Mark brainliest

Answer 2

Answer:

(b) $\frac{r_{2} }{r_{1} }$

Explanation:

Angular momentum is conserved over the whole motion.

So,

$mvr = constant\\m_1v_1r_1 = m_2v_2r_2$

m is same as its the same planet.

$mv_1r_1 = mv_2r_2 \\v_1r_1 = v_2r_2\\\frac{v_1}{v_2} = \frac{r_2}{r_1}$

Hence option (b) is correct.