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Consider two hollow concentric spheres S...

Consider two hollow concentric spheres `S_(1) and S_(2)` enclosing charges 2Q and 4Q respectively as shown in figure. (i) Find out the ratio of the electric flux through them.

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According Gauss' theorem, flux through any surface
`= ("charge enclosed by the surface")/(epsilon)`
`:. (phi_(s_1))/(phi_(s_2)) = ((2Q)/(epsilon))/(((2Q + 4Q))/(epsilon)) = 1/3`.
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