MHT CET 2024 Physics question

The electric flux over a sphere of radius 'r' is ''. If the radius of the sphere is doubled without changing the charge, the flux will be

(A)
(B)
(C)Correct
(D)

Answer: (C)

Solution

By Gauss's law the net electric flux through any closed surface is , which depends only on the enclosed charge and not on the size or shape of the surface. Doubling the radius without changing the charge leaves unchanged, so the flux

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Question ID VK-094823