For a satellite in elliptical orbit which of the following quantities does not remain constant ?

For a planet moving around the sun in an elliptical orbit, which of the following quantities remain constant ?

A comet orbits around the Sun in an elliptical orbit. Which of the following quantities remains constant during the course of its motion?

A comet orbits around the Sun in an elliptical orbit. Which of the following quantities remains constant during the course of its motion?

When there is no external torque acting on a body moving in an elliptical path, which of the following quantities remain constant ?

When there is no external torque acting on a body moving in an elliptical path, which of the following quantities remain constant ?

If earth is revolving in elliptical orbit around sun, then which of the following quantity remains constant w.r.t.

If earth is revolving in elliptical orbit around sun, then which of the following quantity remains constant w.r.t.