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Q.

S1 and S2 are two hollow concentric spheres enclosing charges Q and 2Q respectively. 

(a) What is the ratio of electric flux through S1 and S2 

(b) Instead of air if a medium of dielectric constant 5 is introduced inside S1, what will be the electric flux through it?

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Detailed Solution

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a) Flux through S1=Qε0; Flux through S2=Q+2Qε0=3Qε0
Ratio of the flux is = 13
b) Em=Eair/5
New flux through S1=∮  E¯⋅ds¯=15∫E¯air⋅ds¯=15Qε0=Q5ε0

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S1 and S2 are two hollow concentric spheres enclosing charges Q and 2Q respectively. (a) What is the ratio of electric flux through S1 and S2 (b) Instead of air if a medium of dielectric constant 5 is introduced inside S1, what will be the electric flux through it?