A sphere of mass M radius R2 has a concentric cavity of radius R1 as shown in figure. The force F exerted by the sphere on a particle of mass m located at a distance r from the centre of sphere varies as (0 ≤ r ≤ ∞)

Q: A sphere of mass M radius R2 has a concentric cavity of radius R1 as shown in figure. The force F exerted by the sphere on a particle of mass m located at a distance r from the centre of sphere varies as (0 ≤ r ≤ ∞)

Numerical

Numerical

Ans: (b)