. (A): Comets move around the sun in elliptical orbits. The gravitational force on the comet due to sun is not normal to the comet.s velocity but the work done by the gravitational force over every complete orbit of the comet is zero (R): Gravitational force is a non conservative force.

. (A): Comets move around the sun in elliptical orbits. The gravitatio

1.	. (A): Comets move around the sun in elliptical orbits. The gravitational force on the comet due to sun is not normal to the comet.s velocity but the work done by the gravitational force over every complete orbit of the comet is zero (R): Gravitational force is a non conservative force.
Answer» Both .A. and .R. are TRUE and .R. is the correct explanation of .A. Both .A. and .R. are true and .R. is not the correct explanation of .A. A. is true and .R. is false .A. is false and .R. is true Answer :C