JEE Main 201910 Apr, Morning shiftPhysicsEasyGravitation159× since 2002
The value of acceleration due to gravity at
Earth's surface is 9.8 ms^–2. The altitude above
its surface at which the acceleration due to
gravity decreases to 4.9 ms^–2, is close to :
(Radius of earth = 6.4 × 10⁶ m)