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Q.

Consider two concentric conducting spheres. The outer sphere is hollow and the inner sphere is solid. Initially they are given a charge -7Q and a charge +2Q respectively then the charges on the outer surface and inner surface of the outer shell is

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a

2Q, 7Q

b

2Q, -9Q

c

-5Q, -2Q

d

-2Q, -7Q

answer is C.

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Detailed Solution

Question Image

Charge on the outer surface of outer shell=  - 7Q + 2Q =  - 5Q

Charge on the inner surface of outer shell=  - 2Q

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