Two metal spheres, one of radius R and the other of radius 2R, both have same surface charge density 
. If they are brought in contact and separated, then the new surface charge densities one each of the sphere are respectively.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Before contact, charges of each spheres,
and 
When the two sphere are brought in contact, their charges are shared till their potentials become equal i.e.
… (i)
As there is no loss of charge in the process
or 
(using (i))
and 
Hence, 
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