Particle A and B are dropped to fall towards the earth from a height 2 Re (Re = radius of earth) from surface of earth. If the particles are dropped simultaneously but from two locations which are slightly away from one another, then the separation between the particles (ignore gravitational interaction between the particles)
Decrease
Increase
Remains same
Becomes zero immediately after released
Answer (1)
The gravitational force is towards the centre of the earth. Therefore separation decrease.