A) \[50\,nC,100\,nC\]
B) \[~-\text{ }50\,nC,-\text{ }100\,nC\]
C) \[~50\text{ }nC,\text{ }200\text{ }nC\]
D) \[~-\text{ }50\,nC,-200\text{ }nC\]
Correct Answer: B
Solution :
The charge + 50 nC at the centre induces \[-\text{ }50\text{ }nC\] on inner surface and \[+\text{ }50\text{ }nC\]on outer surface of the spherical sheet. So, charge on the inner surface\[~=-\text{ }50\text{ }nC\] and charge on the outer surface \[=-150\,nC+50\,nC\] \[=-100\,nC\]
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