A planet is moving in an elliptic orbit. If 
, and L stand respectively for its kinetic energy, gravitational potential energy, total energy, and magnitude of angular momentum about the center of force, which of the following statements is correct?
A
T is conserved.
B
V is always positive.
C
E is always negative.
D
L is conserved but the direction of vector 
changes continuously.
changes continuously.
Text Solution
Verified by ExpertsThe correct answer is:
C
In case of planet, total energy of planet is always negative.
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