Planet A orbits a star at an average distance with period

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

Planet A orbits a star at an average distance

r

with period

T

. Planet B orbits the same star at a distance

4r

. What is the orbital period of planet B? (a)

6T

(b)

8T

(c)

2T

(d)

4T