# Class 11 Physics Gravitation: NCERT Solutions for Question 8

This page focuses on the detailed Gravitation question answers for Class 11 Physics Gravitation, addressing the question: 'A comet orbits the Sun in a highly elliptical orbit. Does the comet have a constant (a) linear speed, (b) angular speed, (c) angular momentum, (d) kinetic energy, (e) potential energy, (f) total energy throughout its orbit? Neglect any mass loss of the comet when it comes very close to the Sun.'. The solution provides a thorough breakdown of the question, highlighting key concepts and approaches to arrive at the correct answer. This easy-to-understand explanation will help students develop better problem-solving skills, reinforcing their understanding of the chapter and aiding in exam preparation.
Question 8

## A comet orbits the Sun in a highly elliptical orbit. Does the comet have a constant(a) linear speed,(b) angular speed,(c) angular momentum,(d) kinetic energy,(e) potential energy,(f) total energy throughout its orbit?Neglect any mass loss of the comet when it comes very close to the Sun.

(a) No

(b) No

(c) Yes

(d) No

(e) No

(f) Yes

Angular momentum and total energy at all points of the orbit of a comet moving in a highly elliptical orbit around the Sun are constant. Its linear speed, angular speed, kinetic, and potential energy varies from point to point in the orbit.