The ratio of radii of earth to another planet is 2/3 and the ratio of their mean densities is 4/5. If an astronaut can jump to a maximum height of 1.5 m on the earth, with the same effort, the maximum height he can jump on the planet is

Q: The ratio of radii of earth to another planet is 2/3 and the ration of their mean densities is 4/5. If an astronaut can jump to a maximum height of 1.5 m on the earth, with the same effort, the maximum height he can jump on the planet is

(a) 1 m

(b) 0.8 m

(c) 0.5 m

(d) 1.25

Ans: (b)