1.

Two small conducting spheres of equal radius have charges \[+10\mu C\] and \[-20\mu C\] respectively and placed at a distance \[R\] from each other experience force \[{{F}_{1}}\]. If they are brought in contact and separated to the same distance, they experience force \[{{F}_{2}}\]. The ratio of \[{{F}_{1}}\] to \[{{F}_{2}}\] is [MP PMT 2001]

A.   1 : 8      
B.   ? 8 : 1
C.   1 : 2      
D.   ? 2 : 1
Answer» C.   1 : 2      


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