Two Concentric Imaginary Spherical Surfaces of Radius R and 2R $\phi$

Two concentric imaginary spherical surfaces of radius R and 2R respectively surround a positive point charge -Q located at the center of the surfaces.When compared to the electric flux $\phi$ ₁ through the surface of radius R,the electric flux $\phi$ ₂ through the surface of radius 2R is

A) $$\Phi _ { 2 } = \frac { 1 } { 4 } \Phi _ { 1 }$$ .
B) $$\Phi _ { 2 } = \frac { 1 } { 2 } \Phi _ { 1 }$$ .
C) $\phi$ ₂ = $\phi$ ₁.
D) $\phi$ ₂ = 2 $\phi$ ₁.
E) $\phi$ ₂ = 4 $\phi$ ₁.

Correct Answer:

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