 
			 
			MCQOPTIONS
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				| 1. | Three identical spheres each of radius R are placed such that their centres lie on a straight line. What is the location of their centre of mass from the centre of the first sphere? | 
| A. | R | 
| B. | 2R | 
| C. | 3R | 
| D. | 4R | 
| Answer» C. 3R | |