Published by:
CGP EDU Academic Team
Published on: August 21, 2026
Suppose the speed of a planet at the perihelion 
as in the figure be 
and the sun-planet distance 
be 
, then 
are related to the corresponding quantities at the aphelion 
as
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
The radius and velocity vectors of the planet are mutually perpendicular at any point, then the angular momentum at point 
is 
Similarly, at point 
is 
By conservation of angular momentum,
or
As, 
So,
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