A planet orbits in an elliptical path of eccentricity e around a massive star considered fixed at one of the foci. The point in space where it is closest to the star is denoted by P and the point where it is farthest is denoted by A. Let v_P and v_A be the respective speeds at P and A. Then

Question

A planet orbits in an elliptical path of eccentricity e around a massive star considered fixed at one of the foci. The point in space where it is closest to the star is denoted by P and the point where it is farthest is denoted by A. Let v_P and v_A  be the  respective speeds at P and A. Then

Examsnet · Accepted Answer

Correct Answer is : vPvA=1+e1−e

KVPY SX SB Exam 2012 Question Paper