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S1 and S2 are two hollow concentric sphe...

`S_1 and S_2` are two hollow concentric spheres enclosing charge Q and 2Q, respectively, as shown in figure. What is the ratio of the electric flux leaving through the surface of `S_1 and S_2`?

A

`1/4`

B

`1/2`

C

`1/3`

D

`2/3`

Text Solution

Verified by Experts

The correct Answer is:
C
According to Gauss' law,
`phi_1 = Q/epsilon_0, phi_2 = (Q+2Q)/epsilon_0`
`:. phi_1/phi_2 = (Q//epsilon_0)/(3Q//epsilon_0) = 1/3`.
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