Question

Consider earth to be a homogeneous sphere. Scientist $A$ goes deep down in a mine and scientist $B$ goes high up in a balloon. The gravitational field measured by

• A. $A$ goes on decreasing and that by $B$ goes on increasing
• B. $B$ goes on decreasing and that by $A$ goes on increasing
• C. Each decreases at the same rate
• D. Each decreases at different

Answer 1

Answer: (D)

Each decreases at different

$ConsiderEarthtobeauniformsolidsphere.Insidethesphereg\propto R,whileoutsidethesphereg\propto \frac{1}{R^2}Hence,theobservatvionofeachscientistwilldiffer.$