MHT CET 2025 Physics question

A charge Q C is placed at the centre of a cube. The flux through two opposite faces of the cube is ( = permittivity of free space)

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

Answer: (B)

Solution

By Gauss's law the total flux through the closed cube is (the C unit is taken as part of the symbol in the options). The charge is at the centre, so by symmetry the flux is shared equally among the 6 faces: each face gets

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Question ID VK-102045