A bulb is kept burning just right above the following solids. Name the shape of the shadows obtained in each case. Attempt to give a rough sketch of the shadow. (You may try to experiment first and then answer these questions).

S.No.  | Object  | Shadow  | Shape’s Name  | 
1.  | A ball  | 
  | Circle  | 
2.  | A cylindrical pipe  | 
  | Line  | 
3.  | A book  | 
  | Rectangle  |