A metallic spherical shell has an inner radius R 1 and outer radiusR 2 . A charge is placed at the centre of the spherical cavity. The surface charge density on the inner surface is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
When a charge +q is placed at the centre of spherical cavity as shown in figure.
Charge induced on the inner surface of shell
… (i)
Charge induced on the outer surface of shell
… (ii)
Surface charge density on the inner surface 
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