A solid sphere of uniform density and radius 4 units is located with its centre at the origin O of coordinates. Two sphere of equal radii 1 unit, with their centres at A(-2,0 ,0) and B(2,0,0) respectively, are taken out of the solid leaving behind spherical cavities as shown if fig Then:
![](https://sahay.guru/wp-content/uploads/2020/10/2-1-2-1024x544.jpg)
![](https://sahay.guru/wp-content/uploads/2020/10/2-2-4-1024x547.jpg)