Assertion :The flux crossing through a closed surfaces is independent of the location of enclosed charge. Reason: Upon the displacement of charges with in a closed surface, the $\to E$ at any point on surface does not change.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is C Assertion is correct but Reason is incorrect

According to Gauss's law, the flux ( $ϕ = \frac{Q_{e n}}{ϵ_{0}}$ ) is only depend on charge enclosed by the surface. It is independent of location of charge inside the surface.But the electric field will change because $E = \frac{k Q}{r^{2}}$ . Thus, assertion is correct and reason is incorrect.

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