A conductor of radius R1, having capacit...

A conductor of radius `R_1`, having capacitance C is placed in free space. Now, a concentric conducting shell of radius `R_2` is placed as shown so that capcitance of the system is increased to nC. Find `R_1/R_2`

A

a. `(1-1/n)`

B

b. `(n-1)`

C

c. `(1+1/n)`

D

d. n

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